JP7636738B2 - 新規化合物及びその製造方法、並びに医薬組成物 - Google Patents
新規化合物及びその製造方法、並びに医薬組成物 Download PDFInfo
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- JP7636738B2 JP7636738B2 JP2022580557A JP2022580557A JP7636738B2 JP 7636738 B2 JP7636738 B2 JP 7636738B2 JP 2022580557 A JP2022580557 A JP 2022580557A JP 2022580557 A JP2022580557 A JP 2022580557A JP 7636738 B2 JP7636738 B2 JP 7636738B2
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- 125000001424 substituent group Chemical group 0.000 claims description 23
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 20
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- 125000003118 aryl group Chemical group 0.000 claims description 15
- 125000001072 heteroaryl group Chemical group 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
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- 238000006243 chemical reaction Methods 0.000 description 79
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- 150000001412 amines Chemical class 0.000 description 5
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- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 description 5
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
- C07F7/1872—Preparation; Treatments not provided for in C07F7/20
- C07F7/1892—Preparation; Treatments not provided for in C07F7/20 by reactions not provided for in C07F7/1876 - C07F7/1888
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/24—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D213/28—Radicals substituted by singly-bound oxygen or sulphur atoms
- C07D213/30—Oxygen atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/24—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D213/36—Radicals substituted by singly-bound nitrogen atoms
- C07D213/40—Acylated substituent nitrogen atom
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- C—CHEMISTRY; METALLURGY
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Description
<1> 下記式(1)で表される化合物。
本実施形態に係る化合物は、下記式(1)で表される。
上記式(1)で表される化合物は、例えば、以下の(A)~(L)の各工程を経て製造することができる。
(A)不斉アルキル化による式(20)で表される化合物の製造
(B)還元による式(19)で表される化合物の製造
(C)酸化、及びエヴァンス不斉補助基を用いた向山アルドール反応による式(16)で表される化合物の製造
(D)式(16)で表される化合物から式(15)で表される化合物(ワインレブアミド)の製造
(E)ヒドロキシ基保護による式(14)で表される化合物の製造
(F)還元及びウィティッヒ反応による式(11)で表される化合物の製造
(G)還元による式(10)で表される化合物の製造
(H)ウィティッヒ反応による式(8)で表される化合物の製造
(I)還元による式(7)で表される化合物の製造
(J)分子内ディールス・アルダー反応による式(6)で表される化合物の製造
(K)ホーナー・ワズワース・エモンス反応及び加水分解による式(3)で表される化合物の製造
(L)式(3)で表される化合物から式(1)で表される化合物の製造
本実施形態に係る医薬組成物は、上記式(1)で表される化合物と、薬学的に許容される担体と含有する。
2,4-ヘキサジエン-1-オール(10.0g,102mmol)を含む塩化メチレン溶液(51mL)に対し、0℃で三臭化リン(9.7mL,102mmol)を滴下し、1時間撹拌した。反応系に水を0℃で加えて希釈した後、反応混合液から有機層を分取した。有機層を無水硫酸ナトリウムで乾燥した後、濾過及び減圧濃縮して粗生成物を得た。予め冷却したシリカゲルを用いて、ゲル濾過(展開溶媒:ヘキサン/酢酸エチル=10/1、事前に0℃に冷却したものを使用)による粗精製を行った。濾過及び減圧濃縮し、化合物1-2の粗生成物を得た。この粗生成物を精製すること無く、そのまま次の反応に用いた。
(S)-4-ベンジル-3-プロピオニルオキサゾリジン-2-オン(化合物1-3a)(9.0g,38.7mmol)を含むテトラヒドロフラン溶液(39mL)に対し、-78℃でナトリウムビス(トリメチルシリル)アミドのテトラヒドロフラン溶液(1.0M,43mL,43.0mmol)を滴下した。反応混合液を15分間撹拌した後、(2E,4E)-1-ブロモヘキサ-2,4-ジエン(化合物1-2)(12.5g,77.4mmol)とテトラブチルアンモニウムヨージド(1.48g,4.0mmol)とを加え、室温まで昇温し1.5時間撹拌した。反応系に飽和塩化アンモニウム水溶液を0℃で加えて反応を停止し、酢酸エチルを加えて有機層を分取した後、水層を酢酸エチルで抽出した。有機層を合わせて、無水硫酸ナトリウムで乾燥した後、濾過及び減圧濃縮して粗生成物を得た。得られた粗生成物をカラムクロマトグラフィ(展開溶媒:ヘキサン/酢酸エチル=7/1)で精製し、(S)-4-ベンジル-3-((R,4’E,6’E)-2’-メチルオクタ-4’,6’-ジエノイル)オキサゾリジン-2-オン(化合物1-4)(8.8g,72%)を得た。
水素化アルミニウムリチウム(3.4g,89.6mmol)を含むテトラヒドロフラン溶液(133mL)に対し、0℃で(S)-4-ベンジル-3-((R,4’E,6’E)-2’-メチルオクタ-4’,6’-ジエノイル)オキサゾリジン-2-オン(化合物1-4)(18.7g,59.7mmol)のテトラヒドロフラン溶液(66mL)を滴下し、反応混合液を室温で2.5時間撹拌した。反応系にメタノール及び1.0M 塩酸を0℃で加えて反応を停止し、酢酸エチルを加えて有機層を分取した後、水層を酢酸エチルで抽出した。有機層を合わせて、無水硫酸ナトリウムで乾燥した後、濾過及び減圧濃縮して粗生成物を得た。得られた粗生成物をカラムクロマトグラフィ(展開溶媒:ヘキサン/酢酸エチル=5/1)で精製し、(R,4E,6E)-2-メチルオクタ-4,6-ジエン-1-オール(化合物1-5)(7.2g,86%)を得た。
(R,4E,6E)-2-メチルオクタ-4,6-ジエン-1-オール(化合物1-5)(6.9g,49.3mmol)を含む塩化メチレン溶液(131mL)に対し、室温でジメチルスルホキシド(32.8mL,462mmol)とトリエチルアミン(54.6mL,394mmol)とを加えた。反応混合液を0℃にした後、三酸化硫黄-ピリジン錯体(31.4g,197mmol)を加えて室温で反応混合物を1時間撹拌した。化合物1-6の粗生成物を含む反応混合液を、精製すること無く、そのまま次の反応に用いた。
(R)-4-ベンジル-3-プロピオニルオキサゾリジン-2-オン(化合物1-3b)(11.5g,49.3mmol)を含む塩化メチレン溶液(164mL)に対し、0℃でトリフルオロメタンスルホン酸ジブチルボロンの塩化メチレン溶液(49.3mL,49.3mmol)とトリエチルアミン(6.8mL,49.3mmol)とを加え、10分間撹拌した。反応混合液を-78℃にした後、化合物1-6の粗生成物を含む反応混合液をカニュレーションで加えて30分間撹拌し、0℃に昇温しさらに1時間撹拌した。反応系にリン酸緩衝溶液(pH7)を0℃で加えて反応を停止し、塩化メチレンを加えて有機層を分取した後、水層を塩化メチレンで抽出した。有機層を合わせて、無水硫酸ナトリウムで乾燥した後、濾過及び減圧濃縮して粗生成物を得た。得られた粗生成物をカラムクロマトグラフィ(展開溶媒:ヘキサン/酢酸エチル=10/1→3/1)で精製し、(R)-4-ベンジル-3-((2’R,3’S,4’R,6’E,8’E)-3’-ヒドロキシ-2’,4’-ジメチルデカ-6’,8’-ジエノイル)オキサゾリジン-2-オン(化合物1-7)(14.6g,2工程収率80%)を得た。
N,O-ジメチルヒドロキシルアミン塩酸塩(6.83g,70.0mmol)のテトラヒドロフラン溶液(230mL)に対し、0℃でトリメチルアルミニウムのn-ヘキサン溶液(1.0M,70mL,70.0mmol)を加え、反応液を0℃で15分間撹拌した後、室温まで昇温して15分間撹拌した。反応混合液に0℃で(R)-4-ベンジル-3-((2’R,3’S,4’R,6’E,8’E)-3’-ヒドロキシ-2’,4’-ジメチルデカ-6’,8’-ジエノイル)オキサゾリジン-2-オン(化合物1-7)(13.0g,35.0mmol)のテトラヒドロフラン溶液(120mL)を加えて15分間撹拌した。反応系に飽和酒石酸ナトリウムカリウム水溶液を0℃で加えて反応を停止し、酢酸エチルを加えて有機層を分取した後、水層を酢酸エチルで抽出した。有機層を合わせて、無水硫酸ナトリウムで乾燥した後、濾過及び減圧濃縮して粗生成物を得た。得られた粗生成物をカラムクロマトグラフィ(展開溶媒:ヘキサン/酢酸エチル=3/1→1/1)で精製し、(2R,3S,4R,6E,8E)-3-ヒドロキシ-N-メトキシ-N,2,4-トリメチルデカ-6,8-ジエナミド(化合物1-8)(8.5g,95%)を得た。
(2R,3S,4R,6E,8E)-3-ヒドロキシ-N-メトキシ-N,2,4-トリメチルデカ-6,8-ジエナミド(化合物1-8)(8.63g,33.8mmol)を含む塩化メチレン溶液(170mL)に対し、0℃で2,6-ルチジン(15.8mL,135mmol)とt-ブチルジメチルシリルトリフラート(15.5mL,67.6mmol)とを加え、反応混合液を0℃で15分間撹拌した。反応系に飽和塩化アンモニウム水溶液を0℃で加えて反応を停止し、塩化メチレンを加えて有機層を分取した後、水層を塩化メチレンで抽出した。有機層を合わせて、無水硫酸ナトリウムで乾燥した後、濾過及び減圧濃縮して粗生成物を得た。得られた粗生成物をカラムクロマトグラフィ(展開溶媒:ヘキサン/酢酸エチル=20/1→5/1)で精製し、(2R,3S,4R,6E,8E)-3-((tert-ブチルジメチルシリル)オキシ)-N-メトキシ-N,2,4-トリメチルデカ-6,8-ジエナミド(化合物1-9)(12.4g,99%)を得た。
(2R,3S,4R,6E,8E)-3-((tert-ブチルジメチルシリル)オキシ)-N-メトキシ-N,2,4-トリメチルデカ-6,8-ジエナミド(化合物1-9)(211mg,0.570mmol)を含むテトラヒドロフラン溶液(5.7mL)に対し、-78℃で水素化ジイソブチルアルミニウムのn-ヘキサン溶液(1.03M,0.72mL,0.74mmol)を加え、0℃まで昇温して1.5時間撹拌した。反応系にメタノール及び飽和酒石酸ナトリウムカリウム水溶液を0℃で加えて反応を停止し、酢酸エチルを加えて有機層を分取した後、水層を酢酸エチルで抽出した。有機層を合わせて、無水硫酸ナトリウムで乾燥した後、濾過及び減圧濃縮して化合物1-10の粗生成物を得た。この粗生成物を精製すること無く、そのまま次の反応に用いた。
化合物1-10の粗生成物を含む塩化メチレン溶液(5.7mL)に対し、室温でN-メトキシ-N-メチル2-(トリフェニル-λ5-ホスファンイリデン)アセトアミド(414mg,1.140mmol)を加え、35℃まで昇温して16時間撹拌した。反応混合液を減圧濃縮して粗生成物を得た。得られた粗生成物をカラムクロマトグラフィ(展開溶媒:ヘキサン/酢酸エチル=4/1)で精製し、(2E,4S,5S,6R,8E,10E)-5-((tert-ブチルジメチルシリル)オキシ)-N-メトキシ-N,4,6-トリメチルドデカ-2,8,10-トリエナミド(化合物1-11)(132mg,2工程収率56%)を得た。この際、化合物1-10を59.4mg(28%)回収した。化合物1-10及び化合物1-11の物性値は以下のとおりである。
1H NMR(400MHz,CDCl3):δ 9.81(d,J=0.8Hz,1H,CHO),6.07-5.93(m,2H,H-7,H-8),6.07-5.93(m,1H,H-9),5.50-5.40(m,1H,H-6),4.00(dd,J=4.8,4.0Hz,1H,H-3),2.58-2.47(m,1H,H-2),2.27-2.16(m,1H,H-5),1.94-1.83(m,1H,H-5),1.07(d,J=7.2Hz,1H,2-Me),0.89(s,9H,TBS),0.84(d,J=6.8Hz,3H,4-Me),0.08(s,3H,TBS),0.03(s,3H,TBS).
1H NMR(400MHz,CDCl3):δ 6.94(dd,J=15.6,8.8Hz,1H,H-3),6.34(d,J=15.6Hz,1H,H-2),6.04-5.90(m,2H,H-9,H-10),5.61-5.50(m,1H,H-11),5.50-5.40(m,1H,H-8),3.67(s,3H,NMe),3.50(dd,J=6.4,3.2Hz,1H,H-5),3.22(s,3H,OMe),2.61-2.47(m,1H,H-4),1.94-1.84(m,1H,H-7),1.71(d,J=6.8Hz,3H,H-12),1.66-1.56(m,1H,H-6),1.05(d,J=5.6Hz,3H,4-Me),0.90(s,9H,TBS),0.81(d,J=6.8Hz,3H,6-Me),0.04(s,3H,TBS),0.04(s,3H,TBS).
(2E,4S,5S,6R,8E,10E)-5-((tert-ブチルジメチルシリル)オキシ)-N-メトキシ-N,4,6-トリメチルドデカ-2,8,10-トリエナミド(化合物1-11)(132mg,0.332mmol)を含むテトラヒドロフラン溶液(6.6mL)に対し、-78℃で水素化ジイソブチルアルミニウムのn-ヘキサン溶液(1.03M,0.42mL,0.43mmol)を加え、0℃まで昇温して10分間撹拌した。反応系にメタノール及び飽和酒石酸ナトリウムカリウム水溶液を0℃で加えて反応を停止し、酢酸エチルを加えて有機層を分取した後、水層を酢酸エチルで抽出した。有機層を合わせて、無水硫酸ナトリウムで乾燥した後、濾過及び減圧濃縮して粗生成物を得た。得られた粗生成物を薄層クロマトグラフィ(展開溶媒:ヘキサン/酢酸エチル=4/1)で精製し、(2E,4S,5S,6R,8E,10E)-5-((tert-ブチルジメチルシリル)オキシ)-4,6-ジメチルドデカ-2,8,10-トリエナール(化合物1-12)(82.8mg,74%)を得た。この際、化合物1-11を7.5mg(6%)回収した。化合物1-12の物性値は以下のとおりである。
1H NMR(400MHz,CDCl3):δ 9.51(d,J=7.6Hz,1H,CHO),6.94(dd,J=16.0,6.8Hz,1H,H-3),6.08(ddd,J=16.0,7.6,1.6Hz,1H,H-2),6.03-5.93(m,2H,H-9,H-10),5.64-5.52(m,1H,H-11),5.49-5.40(m,1H,H-8),3.63(dd,J=6.0,2.8Hz,1H,H-5),2.66(dqd,J=6.8,6.8,6.4Hz,1H,H-4),2.17-2.08(m,1H,H-7),1.97-1.85(m,1H,H-7),1.72(d,J=6.4Hz,3H,H-12),1.64-1.55(m,1H,H-6),1.09(d,J=6.8Hz,3H,4-Me),0.92(s,9H,TBS),0.79(d,J=7.6Hz,3H,4-Me),0.07(s,3H,TBS),0.05(s,3H,TBS).
(2E,4S,5S,6R,8E,10E)-5-((tert-ブチルジメチルシリル)オキシ)-4,6-ジメチルドデカ-2,8,10-トリエナール(化合物1-12)を含む塩化メチレン溶液(2.5mL)に対し、室温でN-メトキシ-N-メチル2-(トリフェニル-λ5-ホスファンイリデン)アセトアミド(179mg,0.492mmol)を加え、35℃まで昇温して16時間撹拌した。反応混合液を減圧濃縮して粗生成物を得た。得られた粗生成物を薄層クロマトグラフィ(展開溶媒:ヘキサン/酢酸エチル=4/1)で精製し、(2E,4E,6S,7S,8R,10E,12E)-7-(tert-ブチルジメチルシロキシ)-N-メトキシ-N,6,8-トリメチルテトラデカ-2,4,10,12-テトラエナミド(化合物1-13)(73.5mg,71%)を得た。この際、化合物1-12を59.4mg(10%)回収した。化合物1-13の物性値は以下のとおりである。
1H NMR(400MHz,CDCl3):δ 7.31(d,J=15.6,10.0Hz,1H,3-H),6.22-6.06(m,2H,H-4,H-5),6.06-5.90(m,2H,H-11,H-12),5.62-5.51(m,1H,H-11),5.49-5.40(m,1H,H-10),3.70(s,3H,NMe),3.46(dd,J=6.4,3.2Hz,1H,H-7),3.24(s,3H,OMe),2.53-2.40(m,1H,H-6),2.30-2.18(m,1H,H-9),1.94-1.82(m,1H,H-9),1.72(d,J=6.4Hz,3H,H-14),1.63-1.58(m,1H,H-8),1.02(d,J=6.8Hz,3H,6-Me),0.90(s,9H,TBS),0.80(d,J=6.4Hz,3H,8-Me),0.04(s,3H,TBS),0.03(s,3H,TBS).
(2E,4E,6S,7S,8R,10E,12E)-7-(tert-ブチルジメチルシロキシ)-N-メトキシ-N,6,8-トリメチルドデカ-2,4,10,12-テトラエナミド(化合物1-13)(73.5mg,0.174mmol)を含むテトラヒドロフラン溶液(1.7mL)に対し、-78℃で水素化ジイソブチルアルミニウムのn-ヘキサン溶液(1.03M,0.22mL,0.23mmol)を加え、0℃まで昇温して20分間撹拌した。反応系にメタノール及び飽和酒石酸ナトリウムカリウム水溶液を0℃で加えて反応を停止し、酢酸エチルを加えて有機層を分取した後、水層を酢酸エチルで抽出した。有機層を合わせて、無水硫酸ナトリウムで乾燥した後、濾過及び減圧濃縮して粗生成物を得た。得られた粗生成物を薄層クロマトグラフィ(展開溶媒:ヘキサン/酢酸エチル=4/1)で精製し、(2E,4E,6S,7S,8R,10E,12E)-7-((tert-ブチルジメチルシリル)オキシ)-6,8-ジメチルテトラデカ-2,4,10,12-テトラエナール(化合物1-14)(82.8mg,74%)を得た。化合物1-14の物性値は以下のとおりである。
1H NMR(400MHz,CDCl3):δ 9.51(d,J=8.4Hz,1H,CHO),7.08(dd,J=15.2,9.6Hz,1H,H-3),6.34-6.24(m,2H,H-4,H-6),6.09(dd,J=15.2,8.4,1H,H-2),6.04-5.94(m,2H,H-11,H-12),5.64-5.52(m,1H,H-13),5.52-5.40(m,1H,H-10),3.51(dd,J=6.0,3.2Hz,1H,H-7),2.58-2.50(m,1H,H-6),2.18-2.08(m,1H,H-9),1.96-1.86(m,1H,H-9),1.73(d,J=6.8Hz,3H,H-14),1.69-1.56(m,1H,H-8),1.06(d,J=7.2Hz,3H,6-Me),0.92(s,9H,TBS),0.82(d,J=7.6Hz,3H,8-Me),0.06(s,3H,TBS),0.04(s,3H,TBS).
(2E,4E,6S,7S,8R,10E,12E)-7-((tert-ブチルジメチルシリル)オキシ)-6,8-ジメチルテトラデカ-2,4,10,12-テトラエナール(化合物1-14)(21.2mg,0.0585mmol)を含む塩化メチレン溶液(2.0mL)に対し、-78℃でジエチルアルミニウムクロリドのn-ヘキサン溶液(1.0M,0.06mL,0.06mmol)を加えた。反応系を-45℃に昇温して20分撹拌した後、室温に昇温して1.5時間撹拌した。反応系にメタノール及び飽和酒石酸ナトリウムカリウム水溶液を0℃で加えて反応を停止し、塩化メチレンを加えて有機層を分取した後、水層を塩化メチレンで抽出した。有機層を合わせて、無水硫酸ナトリウムで乾燥した後、濾過及び減圧濃縮して粗生成物を得た。得られた粗生成物を薄層クロマトグラフィ(展開溶媒:ヘキサン/酢酸エチル=4/1)で精製し、(E)-3-((1’S,2’S,4’aR,6’R,7’S,8’S,8’aS)-7’-((tert-ブチルジメチルシリル)オキシ)-2’,6’,8’-トリメチル-1’,2’,4’a,5’,6’,7’,8’,8’a-オクタヒドロナフタレン-1’-イル)アクリルアルデヒド(化合物1-15)(10.5mg,50%)、及び(E)-3-((1’R,2’R,4’aS,6’R,7’S,8’S,8’aR)-7’-((tert-ブチルジメチルシリル)オキシ)-2’,6’,8’-トリメチル-1’,2’,4’a,5’,6’,7’,8’,8’a-オクタヒドロナフタレン-1’-イル)アクリルアルデヒド(化合物1-16)(3.7mg,17%)を得た。化合物1-15の物性値は以下のとおりである。
1H NMR(400MHz,CDCl3):δ 9.52(d,J=8.0Hz,1H,CHO),6.82(dd,J=15.6,10.8Hz,1H,H-3),6.04(dd,J=15.6,8.0Hz,1H,H-2),5.64-5.52(m,2H,H-3’,H-4’),2.86(dd,J=9.6,9.6Hz,1H,H-7),2.63(ddd,J=10.4,7.6,6.0Hz,1H,H-1’),2.38-2.22(m,1H,H-2’),1.92-1.83(m,1H,H-4’a),1.80(ddd,J=13.2,7.2,3.6Hz,1H,H-5’),1.64-1.48(m,3H,H-5’,H-6’,H-8’),1.48-1.36(m,1H,8’a-H),0.98(d,J=7.6Hz,3H,2’-Me),0.97(d,J=6.4Hz,3H,6’-Me),0.97(d,J=6.4Hz,3H,8’-Me),0.90(s,9H,TBS),0.06(s,3H,TBS),0.06(s,3H,TBS).
ジエチルホスホノブロモ酢酸エチル(化合物2-0)(26.3mg,0.0869mmol)を含むテトラヒドロフラン溶液(0.7mL)に対し、-78℃でリチウムビス(トリメチルシリル)アミドのテトラヒドロフラン溶液(1.0M,0.08mL,0.946mmol)を滴下した。反応混合液を-78℃で30分間撹拌した後、化合物1-15(10.5mg,0.0290mmol)を含むテトラヒドロフラン溶液(0.3mL)を加え、室温まで昇温して10分間撹拌した。反応系に飽和塩化アンモニウム水溶液を0℃で加えて反応を停止し、酢酸エチルを加えて有機層を分取した後、水層を酢酸エチルで抽出した。有機層を合わせて、無水硫酸ナトリウムで乾燥した後、濾過及び減圧濃縮して粗生成物を得た。得られた粗生成物を薄層クロマトグラフィ(展開溶媒:ヘキサン/酢酸エチル=4/1)で精製し、エチル(2Z,4E)-2-ブロモ-5-((1’S,2’S,4’aR,6’R,7’S,8’S,8’aS)-7’-((tert-ブチルジメチルシリル)オキシ)-2’,6’,8’-トリメチル-1’,2’,4’a,5’,6’,7’,8’,8’a-オクタヒドロナフタレン-1’-イル)ペンタ-2,4-ジエノエート(化合物2-1)(8.8mg,2工程収率59%)、及びエチル(2E,4E)-2-ブロモ-5-((1’S,2’S,4’aR,6’R,7’S,8’S,8’aS)-7’-((tert-ブチルジメチルシリル)オキシ)-2’,6’,8’-トリメチル-1’,2’,4’a,5’,6’,7’,8’,8’a-オクタヒドロナフタレン-1’-イル)ペンタ-2,4-ジエノエート(化合物2-2)(4.0mg,2工程収率27%)を得た。化合物2-1の物性値は以下のとおりである。
1H NMR(500MHz,CDCl3):δ 7.65(d,J=9.0Hz,1H,H-3),6.47-6.30(m,2H,H-4,H-5),5.58(ddd,J=9.5,3.0,2.5Hz,1H,H-4’),5.49(ddd,J=9.5,2.0,2.0Hz,1H,H-3’),4.29(q,J=7.5Hz,2H,OEt),2.86(dd,J=9.5,9.5Hz,1H,H-7’),2.54(ddd,J=9.0,9.0,5.0Hz,1H,H-1’),2.30-2.18(m,1H,H-2’),1.91-1.82(m,1H,H-4’a),1.76(ddd,J=13.0,3.5,3.5Hz,1H,H-5’),1.60-1.49(m,3H,H-5’,H-6’,H-8’),1.46-1.36(m,1H,H-8’a),1.35(t,J=7.5Hz,3H,OEt),1.00(d,J=6.5Hz,3H,2’-Me),0.98(d,J=7.0Hz,3H,8’-Me),0.96(d,J=6.5Hz,3H,6’-Me),0.91(s,9H,TBS),0.07(s,6H,TBS).
エチル(2Z,4E)-2-ブロモ-5-((1’S,2’S,4’aR,6’R,7’S,8’S,8’aS)-7’-((tert-ブチルジメチルシリル)オキシ)-2’,6’,8’-トリメチル-1’,2’,4’a,5’,6’,7’,8’,8’a-オクタヒドロナフタレン-1’-イル)ペンタ-2,4-ジエノエート(化合物2-1)(84.7mg,0.166mmol)を含むメタノール(1.0mL)及びテトラヒドロフラン(2.0mL)の混合溶液に対し、0℃で4.0M 水酸化リチウム水溶液(1.0mL,4.00mmol)を加え、室温まで昇温して12時間撹拌した。反応系に1.0M 塩酸を0℃で加えて反応を停止し、酢酸エチルを加えて有機層を分取した後、水層を酢酸エチルで抽出した。有機層を合わせて、無水硫酸ナトリウムで乾燥した後、濾過及び減圧濃縮して、化合物2-3の粗生成物を得た。この粗生成物を精製すること無く、そのまま次の反応に用いた。
化合物2-3の粗生成物を含む塩化メチレン溶液(5.5mL)に対し、室温で2-メチル-6-ニトロ安息香酸無水物(85.5mg,0.248mmol)と4-ジメチルアミノピリジン(60.7mg,0.497mmol)とを加えた。反応混合液を10分間撹拌した後、5-アミノメチル-1,3-オキサゾール(アミンA-1)(162.4mg,1.66mmol)を加え、室温で10分間撹拌した。反応系に飽和塩化アンモニウム水溶液を0℃で加えて反応を停止し、塩化メチレンを加えて有機層を分取した後、水層を塩化メチレンで抽出した。有機層を合わせて、無水硫酸ナトリウムで乾燥した後、濾過及び減圧濃縮して粗生成物を得た。得られた粗生成物を薄層クロマトグラフィ(展開溶媒:クロロホルム/メタノール=20/1)で精製し、(2Z,4E)-2-ブロモ-5-((1’S,2’S,4’aR,6’R,7’S,8’S,8’aS)-7’-((tert-ブチルジメチルシリル)オキシ)-2’,6’,8’-トリメチル-1’,2’,4’a,5’,6’,7’,8’,8’a-オクタヒドロナフタレン-1’-イル)-N-(オキサゾール-5’’-イルメチル)ペンタ-2,4-ジエナミド(化合物2-4)(75.6mg,2工程収率81%)を得た。化合物2-1の物性値は以下のとおりである。
1H NMR(500MHz,CDCl3):δ 7.85(s,1H,H-2’’),7.77(d,J=10.5Hz,1H,H-3),7.04(s,1H,H-4’’),6.94(brt,J=5.5Hz,1H,NH),6.36(dd,J=15.0,10.5Hz,1H,H-4),6.28(dd,J=15.0,10.0Hz,1H,H-5),5.57(ddd,J=9.5,4.0,3.0Hz,1H,H-4’),5.47(ddd,J=9.5,2.0,2.0Hz,1H,H-3’),4.60(d,J=5.5Hz,2H,CH2Ar),2.85(dd,J=9.5,9.5Hz,1H,H-7’),2.51(ddd,J=10.0,8.5,6.0Hz,1H,H-1’),2.27-2.17(m,1H,H-2’),1.91-1.78(m,1H,H-4’a),1.88-1.71(m,2H,H-6’,H-8’),1.58-1.47(m,1H,H-5’),1.44-1.30(m,1H,H-8’a),0.98(d,J=7.0Hz,3H,2’-Me),0.97(d,J=7.0Hz,3H,8’-Me),0.94(d,J=6.5Hz,3H,6’-Me),0.89(s,9H,TBS),0.06(s,6H,TBS).
(2Z,4E)-2-ブロモ-5-((1’S,2’S,4’aR,6’R,7’S,8’S,8’aS)-7’-((tert-ブチルジメチルシリル)オキシ)-2’,6’,8’-トリメチル-1’,2’,4’a,5’,6’,7’,8’,8’a-オクタヒドロナフタレン-1’-イル)-N-(オキサゾール-5’’-イルメチル)ペンタ-2,4-ジエナミド(化合物2-4)(75.6mg,0.134mmol)を含むメタノール(2.0mL)及びテトラヒドロフラン(2.0mL)の混合溶液に対し、0℃で12M 塩酸(0.40mL,4.80mmol)を加え、室温まで昇温して12時間撹拌した。反応系に飽和炭酸水素ナトリウム水溶液を0℃で加えて反応を停止し、酢酸エチルを加えて有機層を分取した後、水層を酢酸エチルで抽出した。有機層を合わせて、無水硫酸ナトリウムで乾燥した後、濾過及び減圧濃縮して粗生成物を得た。得られた粗生成物を薄層クロマトグラフィ(展開溶媒:クロロホルム/メタノール=20/1)で精製し、(2Z,4E)-2-ブロモ-5-((1’S,2’S,4’aR,6’R,7’S,8’S,8’aS)-7’-ヒドロキシ-2’,6’,8’-トリメチル-1’,2’,4’a,5’,6’,7’,8’,8’a-オクタヒドロナフタレン-1’-イル)-N-(オキサゾール-5’’-イルメチル)ペンタ-2,4-ジエナミド(化合物RS1)(57.3mg,95%)を得た。化合物RS1の物性値は以下のとおりである。
1H NMR(500MHz,CDCl3):δ 7.85(s,1H,H-2’’),7.78(d,J=10.5Hz,1H,H-3),7.04(s,1H,H-4’’),6.95(brt,J=5.5Hz,1H,NH),6.41(dd,J=15.0,10.5Hz,1H,H-4),6.30(dd,J=15.0,10.0Hz,1H,H-5),5.58(ddd,J=9.5,4.0,3.0Hz,1H,H-4’),5.45(ddd,J=9.5,2.0,2.0Hz,1H,H-3’),4.61(d,J=5.5Hz,2H,CH2Ar),2.73(dd,J=9.5,9.5Hz,1H,H-7’),2.54(ddd,J=10.0,10.0,5.0Hz,1H,H-1’),2.27-2.17(m,1H,H-2’),1.92-1.82(m,1H,H-4’a),1.80-1.71(m,2H,H-5’),1.76-1.64(m,2H,H-6’,H-8’),1.54-1.44(m,1H,H-5’),1.36-1.22(m,1H,H-8’a),1.07(d,J=6.5Hz,3H,2’-Me),1.04(d,J=7.0Hz,3H,8’-Me),0.95(d,J=6.5Hz,3H,6’-Me).
エチル(2Z,4E)-2-ブロモ-5-((1’S,2’S,4’aR,6’R,7’S,8’S,8’aS)-7’-((tert-ブチルジメチルシリル)オキシ)-2’,6’,8’-トリメチル-1’,2’,4’a,5’,6’,7’,8’,8’a-オクタヒドロナフタレン-1’-イル)ペンタ-2,4-ジエノエート(化合物2-1)(45.7mg,0.089mmol)を含むメタノール(0.45mL)及びテトラヒドロフラン(0.90mL)の混合溶液に対し、0℃で4.0M 水酸化リチウム水溶液(0.45mL,1.80mmol)を加え、室温まで昇温して14時間撹拌した。反応系に1.0M 塩酸を0℃で加えて反応を停止し、酢酸エチルを加えて有機層を分取した後、水層を酢酸エチルで抽出した。有機層を合わせて、無水硫酸ナトリウムで乾燥した後、濾過及び減圧濃縮して化合物2-3の粗生成物を得た。この粗生成物を精製すること無く、そのまま次の反応に用いた。
化合物2-3の粗生成物を含む塩化メチレン溶液(3.0mL)に対し、室温で2-メチル-6-ニトロ安息香酸無水物(46.1mg,0.134mmol)と4-ジメチルアミノピリジン(32.7mg,0.268mmol)とを加えた。反応混合液を10分間撹拌した後、5-アミノメチル-1,3-チアゾール(アミンB-1)(102.0mg,0.893mmol)を加えて室温で1時間撹拌した。反応系に飽和塩化アンモニウム水溶液を0℃で加えて反応を停止し、塩化メチレンを加えて有機層を分取した後、水層を塩化メチレンで抽出した。有機層を合わせて、無水硫酸ナトリウムで乾燥した後、濾過及び減圧濃縮して粗生成物を得た。得られた粗生成物を薄層クロマトグラフィ(展開溶媒:クロロホルム/メタノール=20/1)で精製し、(2Z,4E)-2-ブロモ-5-((1’S,2’S,4’aR,6’R,7’S,8’S,8’aS)-7’-((tert-ブチルジメチルシリル)オキシ)-2’,6’,8’-トリメチル-1’,2’,4’a,5’,6’,7’,8’,8’a-オクタヒドロナフタレン-1’-イル)-N-(チアゾール-5’’-イルメチル)ペンタ-2,4-ジエナミド(化合物2-5)(50.6mg,2工程収率98%)を得た。化合物2-5の物性値は以下のとおりである。
1H NMR(500MHz,CDCl3):δ 8.80(s,1H,H-2’’),7.84(s,1H,H-4’’),7.78(d,J=10.5Hz,1H,H-3),7.05(brt,J=5.5Hz,1H,NH),6.38(dd,J=15.0,10.5Hz,1H,H-4),6.28(dd,J=15.0,10.0Hz,1H,H-5),5.60-5.54(m,1H,H-4’),5.50-5.45(m,1H,H-3’),4.75(d,J=5.5Hz,2H,CH2Ar),2.86(dd,J=9.0,9.0Hz,1H,H-7’),2.52(ddd,J=10.0,10.0,5.5Hz,1H,H-1’),2.27-2.18(m,1H,H-2’),1.92-1.60(m,4H,H-4’a,H-5’,H-6’,H-8’),1.60-1.44(m,1H,H-5’),1.44-1.34(m,1H,H-8’a),0.98(d,J=6.0Hz,3H,2’-Me),0.97(d,J=6.0Hz,3H,8’-Me),0.96(d,J=7.0Hz,3H,6’-Me),0.90(s,9H,TBS),0.07(s,6H,TBS).
(2Z,4E)-2-ブロモ-5-((1’S,2’S,4’aR,6’R,7’S,8’S,8’aS)-7’-((tert-ブチルジメチルシリル)オキシ)-2’,6’,8’-トリメチル-1’,2’,4’a,5’,6’,7’,8’,8’a-オクタヒドロナフタレン-1’-イル)-N-(チアゾール-5’’-イルメチル)ペンタ-2,4-ジエナミド(化合物2-5)(50.6mg,0.087mmol)を含むメタノール(1.6mL)及びテトラヒドロフラン(1.6mL)の混合溶液に対し、0℃で12M 塩酸(0.32mL,3.84mmol)を加え、室温まで昇温して14時間撹拌した。反応系に飽和炭酸水素ナトリウム水溶液を0℃で加えて反応を停止し、酢酸エチルを加えて有機層を分取した後、水層を酢酸エチルで抽出した。有機層を合わせて、無水硫酸ナトリウムで乾燥した後、濾過及び減圧濃縮して粗生成物を得た。得られた粗生成物を薄層クロマトグラフィ(展開溶媒:クロロホルム/メタノール=20/1)で精製し、(2Z,4E)-2-ブロモ-5-((1’S,2’S,4’aR,6’R,7’S,8’S,8’aS)-7’-ヒドロキシ-2’,6’,8’-トリメチル-1’,2’,4’a,5’,6’,7’,8’,8’a-オクタヒドロナフタレン-1’-イル)-N-(チアゾール-5’’-イルメチル)ペンタ-2,4-ジエナミド(化合物RS2)(37.0mg,91%)を得た。化合物RS2の物性値は以下のとおりである。
1H NMR(500MHz,CDCl3):δ 8.92(s,1H,H-2’’),7.91(s,1H,H-4’’),7.80(d,J=10.5Hz,1H,H-3),7.14-7.11(brm,1H,NH),6.44(dd,J=15.5,10.5Hz,1H,H-4),6.31(dd,J=15.0,10.0Hz,1H,H-5),5.61-5.55(m,1H,H-4’),5.48-5.42(m,1H,H-3’),4.76(d,J=6.0Hz,2H,CH2Ar),2.74(dd,J=10.0,10.0Hz,1H,H-7’),2.55(ddd,J=10.0,10.0,5.5Hz,1H,H-1’),2.30-2.17(m,1H,H-2’),1.97-1.70(m,4H,H-4’a,H-5’,H-6’,H-8’),1.56-1.43(m,1H,H-5’),1.37-1.28(m,1H,H-8’a),1.07(d,J=6.0Hz,3H,2’-Me),1.05(d,J=6.0Hz,3H,8’-Me),0.96(d,J=7.0Hz,3H,6’-Me).
化合物2-3のアミド化に際して、5-アミノメチル-1,3-オキサゾールの代わりに4-アミノメチル-1,3-オキサゾールを用いたほかは合成例1と同様にして、化合物RS3を合成した。化合物RS3の物性値は以下のとおりである。
1H NMR(500MHz,CDCl3):δ 7.87(s,1H,H-2’’),7.75(s,1H,H-3),7.65(s,1H,H-5’’),7.18-7.09(brm,1H,NH),6.44-6.25(m,2H,H-4,H-5),5.62-5.53(m,1H,H-3’),4.47(d,J=5.0Hz,2H,CH2Ar),2.78-2.68(m,1H,H-7’),2.53(ddd,J=9.5,9.5,5.0Hz,1H,H-1’),2.28-2.16(m,1H,H-2’),1.94-1.82(m,1H,H-6’),1.80-1.71(m,1H,H-5’),1.71-1.56(m,1H,H-8’),1.56-1.42(m,1H,H-5’),1.38-1.22(m,1H,H-8’a),1.06(d,J=6.0Hz,3H,2’-Me),1.04(d,J=6.0Hz,3H,8’-Me),0.95(d,J=7.0Hz,3H,6’-Me).
化合物2-3のアミド化に際して、5-アミノメチル-1,3-オキサゾールの代わりに2-アミノメチル-1,3-チアゾールを用いたほかは合成例1と同様にして、化合物RS4を合成した。化合物RS4の物性値は以下のとおりである。
1H NMR(400MHz,CD3OD):δ 7.72(s,1H,H-4’’),7.63(s,1H,H-3),7.52(d,J=3.2Hz,1H,H-5’’),6.54-6.36(m,2H,H-4,H-5),5.61(ddd,J=9.2,4.4,2.8Hz,1H,H-4’),5.49(ddd,J=9.2,1.6,1.6Hz,1H,H-3’),4.77(s,2H,CH2Ar),2.63(dd,J=9.6,9.6Hz,1H,H-7’),2.57(ddd,J=8.4,8.4,2.8Hz,1H,H-1’),2.30-2.14(m,1H,H-2’),1.95-1.82(m,1H,H-4’a),1.77(ddd,J=13.2,3.6,3.6Hz,1H,H-5’),1.54-1.40(m,1H,H-6’),1.37-1.21(m,3H,H-5’,H-8’,H-8’a),1.08(d,J=6.4Hz,3H,2’-Me),1.03(d,J=6.0Hz,3H,8’-Me),0.99(d,J=7.2Hz,3H,6’-Me).
化合物2-3のアミド化に際して、5-アミノメチル-1,3-オキサゾールの代わりに3-アミノメチルピリジンを用いたほかは合成例1と同様にして、化合物RS5を合成した。化合物RS5の物性値は以下のとおりである。
1H NMR(500MHz,C6D6):δ 8.40(s,1H,H-2’’),8.37(d,J=3.0Hz,1H,H-6’’),8.08(d,J=11.0Hz,1H,H-3),7.16-7.09(m,1H,H-4’’),6.59(dd,J=7.5,4.5Hz,1H,H-5’’),6.46(brt,J=6.5Hz,1H,NH),6.37(dd,J=15.5,10.5Hz,1H,H-4),6.05(dd,J=15.5,10.0Hz,1H,H-5),5.44(ddd,J=9.5,4.0,3.0Hz,1H,H-4’),5.33(ddd,J=9.5,2.0,2,0Hz,1H,H-3’),3.96(d,J=5.5Hz,2H,CH2Ar),2.35(dd,J=10.0,10.0Hz,1H,H-7’),2.22(ddd,J=9.5,9.5,5.5Hz,1H,H-1’),2.00-1.90(m,1H,H-2’),1.59-1.51(m,1H,H-4’a),1.43(ddd,J=13.0,3.5,3.5Hz,1H,H-5’),1.39-1.19(m,2H,H-6’,H-8’),1.24-1.12(m,1H,H-5’),1.04-0.88(m,1H,H-8’a),0.92(d,J=6.5Hz,3H,2’-Me),0.91(d,J=6.5Hz,3H,8’-Me),0.73(d,J=7.5Hz,3H,6’-Me).
酸化及びエヴァンス不斉補助基を用いた向山アルドール反応に際して、化合物1-5の代わりに(4E,6E)-オクタ-4,6-ジエン-1-オールを用いたほかは合成例2と同様にして、化合物RS6を合成した。化合物RS6の物性値は以下のとおりである。
1H NMR(300MHz,CD3OD):δ 8.89(s,1H,H-2’’),7.79(d,J=3.0Hz,1H,H-4’’),7.59(d,J=9.6Hz,1H,H-3),6.53-6.30(m,2H,H-4,H-5),5.60(ddd,J=9.3,3.6,3.0Hz,1H,H-4’),5.48(ddd,J=9.3,1.8,1.8Hz,1H,H-3’),4.67(s,2H,CH2Ar),3.08(ddd,J=10.8,10.8,4.5Hz,1H,H-7’),2.56(ddd,J=9.3,9.3,5.4Hz,1H,H-1’),2.30-2.12(m,1H,H-2’),2.04-1.90(m,1H,H-4’a),1.90-1.70(m,1H,H-5’),1.48-1.27(m,1H,H-8’),1.37-1.12(m,2H,H-6’,H-8’a),1.15-1.10(m,1H,H-6’),1.06(d,J=6.3Hz,3H,2’-Me),0.97(d,J=7.2Hz,3H,8’-Me).
酸化及びエヴァンス不斉補助基を用いた向山アルドール反応に際して、化合物1-5の代わりに(4E,6E)-オクタ-4,6-ジエン-1-オールを用いたほかは合成例5と同様にして、化合物RS7を合成した。化合物RS7の物性値は以下のとおりである。
1H NMR(500MHz,CD3OD):δ 8.50(s,1H,H-2’’),8.42(d,J=4.5Hz,1H,H-6’’),7.81-7.74(m,1H,H-4’’),7.59(d,J=9.5Hz,1H,H-3),7.40(dd,J=7.5,4.5Hz,1H,H-5’’),6.49-6.35(m,2H,H-4,H-5),5.60(ddd,J=9.0,4.0,2.5Hz,1H,H-4’),5.49(ddd,J=9.0,3.0,3.0Hz,1H,H-3’),4.50(s,2H,CH2Ar),3.07(ddd,J=11.0,11.0,5.0Hz,1H,H-7’),2.70-2.16(m,1H,H-2’),2.05-1.93(m,1H,H-4’a),1.86-1.75(m,1H,H-5’),1.45-1.31(m,1H,H-8’),1.37-1.19(m,2H,H-6’,H-8’a),1.26-1.14(m,1H,H-6’),1.06(d,J=6.0Hz,3H,2’-Me),0.97(d,J=7.0Hz,3H,8’-Me).
化合物2-3のアミド化に際して、5-アミノメチル-1,3-オキサゾールの代わりに2-アミノメチルピリジンを用いたほかは合成例1と同様にして、化合物RS8を合成した。化合物RS8の物性値は以下のとおりである。
1H NMR(400MHz,acetone-d6):δ 8.56-8.50(m,1H,H-6’’),8.23(brt,J=5.2Hz,1H,NH),7.76(ddd,J=7.6,7.6,1.6Hz,1H,H-4’’),7.75(d,J=10.8Hz,1H,H-3),7.38-7.33(m,1H,H-3’’),7.29-7.23(m,1H,H-5’’),6.56(dd,J=15.2,10.4Hz,1H,H-4),6.41(dd,J=15.2,10.4Hz,1H,H-5),5.61(ddd,J=9.2,4.4,2.8Hz,1H,H-4’),5.48(ddd,J=9.2,2.0,2.0Hz,1H,H-5’),4.60(d,J=5.2Hz,2H,CH2Ar),3.50(d,J=6.8Hz,1H,H-7’),2.67-2.57(m,1H,H-8’),2.60(ddd,J=10.4,9.2,5.2Hz,1H,H-1’),2.30-2.18(m,1H,H-2’),1.96-1.84(m,1H,H-4’a),1.74(ddd,J=13.2,3.6,3.6Hz,1H,H-5’),1.54-1.39(m,1H,H-5’),1.38-1.25(m,1H,H-8’a),1.11(d,J=6.0Hz,3H,8’-Me),1.02(d,J=6.0Hz,3H,2’-Me),1.00(d,J=7.6Hz,3H,6’-Me).
HRMS(ESI):m/z calcd for C24H31BrN2O2Na 481.1461 [M+Na]+;found 481.1444.
化合物2-3の脱水縮合反応に際して、5-アミノメチル-1,3-オキサゾールの代わりに3-ピリジンメタノールを用いたほかは合成例1と同様にして、化合物RS9を合成した。化合物RS9の物性値は以下のとおりである。
1H NMR(500MHz,acetone-d6):δ 8.69(s,1H,H-2’’),8.57(d,J=3.5Hz,1H,H-6’’),7.88-7.85(m,1H,H-4’’),7.85(d,J=10.5Hz,1H,H-3),7.43-7.38(m,1H,H-5’’),6.68(dd,J=15.0,10.5Hz,1H,H-4),6.46(dd,J=15.0,10.0Hz,1H,H-5),5.60(ddd,J=9.0,3.0,3.0Hz,1H,H-4’),5.48(ddd,J=9.0,2.5,1.5Hz,1H,H-3’),5.33(s,2H,CH2Ar),3.49(d,J=7.0Hz,1H,H-7’),2.66-2.56(m,2H,H-8’,H-1’),2.30-2.14(m,1H,H-2’),1.94-1.84(m,1H,H-4’a),1.75(ddd,J=13.0,3.0,3.0Hz,1H,H-5’),1.55-1.40(m,1H,H-5’),1.39-1.25(m,1H,H-8’a),1.08(d,J=6.0Hz,3H,8’-Me),1.01(d,J=6.0Hz,3H,2’-Me),0.97(d,J=7.5Hz,3H,6’-Me).
HRMS(ESI):m/z calcd for C24H31BrNO3 460.1482 [M+H]+;found 460.1483.
化合物2-3の脱水縮合反応に際して、5-アミノメチル-1,3-オキサゾールの代わりに2-ピリジンメタノールを用いたほかは合成例1と同様にして、化合物RS10を合成した。化合物RS10の物性値は以下のとおりである。
1H NMR(500MHz,acetone-d6):δ 8.56(d,J=4.5Hz,1H,H-6’’),7.89(d,J=10.5Hz,1H,H-3),7.82(ddd,J=8.0,7.5,1.5Hz,1H,H-4’’),7.49(d,J=8.0Hz,1H,H-3’’),7.32(dd,J=7.5,4.5Hz,1H,H-5’’),6.70(dd,J=15.0,11.0Hz,1H,H-4),6.49(dd,J=15.0,10.0Hz,1H,H-5),5.60(ddd,J=9.0,4.0,3.0Hz,1H,H-4’),5.48(ddd,J=10.0,2.0,1.5Hz,1H,H-3’),5.34(d,J=1.5Hz,2H,CH2Ar),3.49(d,J=6.5Hz,1H,H-7’),2.67-2.58(m,2H,H-8’,H-1’),2.31-2.19(m,1H,H-2’),1.95-1.85(m,1H,H-4’a),1.75(ddd,J=13.5,3.5,3.5Hz,1H,H-5’),1.57-1.40(m,1H,H-5’),1.38-1.25(m,1H,H-8’a),1.09(d,J=6.0Hz,3H,8’-Me),1.02(d,J=7.0Hz,3H,2’-Me),0.99(d,J=6.5Hz,3H,6’-Me).
HRMS(ESI):m/z calcd for C24H30BrNO3Na 482.1301 [M+Na]+;found 482.1318.
合成例1、2、5で得られた化合物RS1、RS2、RS5、及び特許文献1の合成例1と同様にして合成したM-COPAについて、KITチロシンキナーゼに変異を有するヒト培養がん細胞に対する細胞増殖抑制活性を調べた。ヒト培養がん細胞としては、消化管間質腫瘍細胞株であるGIST-T1細胞(KITΔ560-578、イマチニブ感受性)及びGIST-R9細胞(KITΔ560-578/D820V、イマチニブ耐性)、並びにマスト細胞白血病細胞株であるHMC-1.2細胞(KITV560G/D816V、イマチニブ耐性)を使用した。各がん細胞を96ウェルプレートに播いて一晩培養し、段階希釈した各化合物を添加して2日間培養した後、ATP産生を定量することより細胞増殖を測定した(n=3)。GIST-T1細胞、GIST-R9細胞、HMC-1.2細胞の細胞増殖曲線を図1~図3に示す。また、各化合物のIC50を表1に示す。
合成例1~7で得られた化合物RS1~RS7、及び特許文献1の合成例1と同様にして合成したM-COPAについて、ヒト培養がん細胞に対する細胞増殖抑制活性を調べた。がん細胞としては、ヒトがん細胞株8系(皮膚がん1系、卵巣がん1系、前立腺がん1系、肺腺がん2系、大腸がん1系、乳腺がん2系)を使用した。各がん細胞を96ウェルプレートに播いて2日間培養し、段階希釈した各化合物を添加して2日間培養した後、細胞増殖を水溶性テトラゾリウム塩(WST-8)を用いた比色定量で測定した。そして、細胞増殖曲線から50%細胞増殖抑制濃度(GI50)を算出した。各化合物のGI50を表2に示す。
合成例8~10で得られた化合物RS8~RS10について、ヒト培養がん細胞に対する細胞増殖抑制活性を調べた。がん細胞としては、ヒト肺腺がん細胞株2系及びヒト肺扁平上皮がん細胞株1系を使用した。各がん細胞を96ウェルプレートに播いて2日間培養し、段階希釈した各化合物を添加して2日間培養した後、細胞増殖を水溶性テトラゾリウム塩(WST-8)を用いた比色定量で測定した。そして、細胞増殖曲線から50%細胞増殖抑制濃度(GI50)を算出した。各化合物のGI50を表3に示す。
Claims (7)
- 前記式(1)中、R1、R6がそれぞれ独立にアルキル基であり、R2がヒドロキシ基であり、R4、R5、R7、R8が水素原子であり、R9が-C(O)ORd又は-C(O)NReRfで表される基であり、Rdがアリールアルキル基又はヘテロアリールアルキル基であり、Reが水素原子であり、Rfがアリールアルキル基又はヘテロアリールアルキル基である請求項1に記載の化合物。
- 下記式(1)で表される化合物を製造する製造方法であって、下記式(3)で表される化合物から下記式(1)で表される化合物を製造することを含む製造方法。
- 請求項1又は2に記載の化合物と、薬学的に許容される担体と含有する医薬組成物。
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Journal of Medicinal Chemistry,2013年,56,150-159 |
Journal of Organic Chemistry,2000年,65,7075-7082 |
Tetrahedron Letters,2000年,41,2953-2955 |
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