JP5705814B2 - ハリコンドリンb類似体の調製用中間体 - Google Patents
ハリコンドリンb類似体の調製用中間体 Download PDFInfo
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- JP5705814B2 JP5705814B2 JP2012255149A JP2012255149A JP5705814B2 JP 5705814 B2 JP5705814 B2 JP 5705814B2 JP 2012255149 A JP2012255149 A JP 2012255149A JP 2012255149 A JP2012255149 A JP 2012255149A JP 5705814 B2 JP5705814 B2 JP 5705814B2
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Description
本願は、2004年6月3日付けの米国仮特許出願第60/576,642号、2004年11月10日付けの第60/626,769号、並びに2005年3月18日付けの第60/663,300号に優先権を主張するものであり、参照することで、それら各々の全ての内容をここに取り入れることとする。
一実施形態によれば、本発明は、化合物F−1を提供する。
PG1及びPG2の各々は、個々独立して、水素又は適切なヒドロキシ保護基であり;
R1は、R又はORであり;
R2は、CHO又は-CH=CH2であり;且つ
各Rは、個々独立して、水素、C1-4ハロ脂肪族、ベンジル、又はC1-4脂肪族である。但し、R1がOMeのとき、PG1及びPG2はアセトニド基を形成しない。
他の実施形態によれば、本発明は、化合物F−2を提供する。
の各々は、その両方が同時に二重結合であることはないという条件付きで、個々独立して、単結合又は二重結合であり;
LG1は、適切な脱離基であり;
Xは、ハロゲン又は-OSO2(Ry)であり;
Ryは、C1-6脂肪族又は5〜7員の飽和環、部分的に未飽和の環、又は完全に未飽和の環であり、ここでRyは、ハロゲン、R、NO2、CN、OR、SR、又はN(R)2から選択された3つまでの基によって任意に置換されており;
各Rは、個々独立して、水素、C1-4ハロ脂肪族、又はC1-4脂肪族であり;且つ
PG3は、適切なヒドロキシ保護基である。
R'は、-CH=CH2又は-C(O)Hであり;
Alkは、C1-4の直鎖又は分岐脂肪族基であり;且つ
PG5は、適切なヒドロキシ保護基である。
R''は、OH、OPG3、又はLG4であり;
LG4は、適切な脱離基であり;且つ
各PG3は、個々独立して、適切なヒドロキシ保護基である。但し、PG3がt-ブチルジフェニルシリルのとき、R''はOMs以外である。
は、単結合又は二重結合を表し;
nは、1、2、又は3であり;
PG5及びPG6の各々は、個々独立して、適切なヒドロキシ保護基であり;
Wは、CH-A又はC(O)であり;
Aは、オキソ又はC1-6脂肪族基であり、ここでAは、1つ又は複数のQ1基で任意に置換されており;
各Q1は、個々独立して、シアノ、ハロ、アジド、オキソ、OR、SR、SO2R、OSO2R、N(R)2、NR(CO)R、NR(CO)(CO)R、NR(CO)N(R)2、NR(CO)OR、(CO)OR、O(CO)R、(CO)N(R)2、O(CO)N(R)2、O(CO)N(R)2、又はOPG1であり、ここでPG1は適切なヒドロキシ保護基であり;
任意に、A上の2つのQ1は一緒になって、窒素、酸素又は硫黄から個々独立して選択された0〜4個のヘテロ原子を有する、3〜8員の、飽和環、部分的に未飽和の環、又はアリール環を形成し;
各Rは、個々独立して、水素、又はC1-6脂肪族、5〜10員の飽和環、部分的に未飽和の環又はアリール炭素環、又は窒素、酸素又は硫黄から個々独立して選択された0〜4個のヘテロ原子を有する、4〜10員の、飽和環、部分的に未飽和の環又はアリール環から選択された任意に置換された基であり;
任意に、同一窒素原子上の2つのR基は、前記窒素原子と一緒になって、窒素、酸素又は硫黄から個々独立して選択された1〜4個のヘテロ原子を有する、3〜8員の飽和環、部分的に未飽和の環、又はアリール環を形成する。
(1)Aは、ヒドロキシ、アミノ、アジド、ハロ、及びオキソから選択される少なくとも1つの置換基を有する;
(2)Aは、ヒドロキシ、アミノ、及びアジドから選択される少なくとも1つの置換基を有するC1-6アルキル基である;
(3)Aは、ヒドロキシ、アミノ、及びアジドから個々独立して選択される少なくとも2つの置換基を有する;
(4)Aは、ヒドロキシ及びアミノから個々独立して選択される少なくとも2つの置換基を有する;
(5)Aは、少なくとも1つのヒドロキシ置換基と少なくとも1つのアミノ置換基を有する;
(6)Aは、少なくとも2つのヒドロキシ置換基を有する;
(7)Aは、置換されているC2-4脂肪族基である;
(8)Aは、置換されているC3脂肪族基である;
(9)Aは、Gを含有する環にAを連結させる炭素原子に対しアルファ位にある(S)-ヒドロキシを有するか、又は(R)-ヒドロキシを有する;
(10)Aは、ヒドロキシ及びシアノから選択される少なくとも1つの置換基を有するC1-6飽和脂肪族基である
さらに他の実施形態によれば、本発明は、化合物F−3を提供する。
各PG4は、個々独立して、適切なヒドロキシ保護基から選択され;
R3は、CHO又はC(O)OR4であり;
R4は、適切なカルボキシ保護基であり;且つ
LG2は、適切な脱離基である。
断片F−1及びF−2の結合は、一般に、以下のスキームVIIIに記載のようにして達成することができる。
ハリコンドリンB類似体B-1939の調製を例示すべく、以下の実施例では、本発明の方法及び化合物を用いたハリコンドリンBの合成を説明する。
溶媒系: 96:4(vol/vol)ヘプタン:tert-ブタノール(移動相)
擬似移動相型
クロマトグラフィ装置: Knauer SMG System CSEP C912
等温式(ラングミュア型、前面分析(frantal analysis)により決定):
望ましくない異性体: Qi*=2.8768xCi/(1+0.02327xCi)
所望の異性体: Qi=4.5320xCi/(1+0.0034595xCi)
*Qi=固相濃度(g/L)及びCi=液層濃度(g/L)
カラム空隙率: 0.658
温度: 27℃
EuroChrom 2000 for Windows. SMB Guide ver. 1.2(Wissenschaftliche Geratebau Dr.-Ing. Herbert Knauer GmbH, D-14163 Berlin;作者H. Kniep及びA. Seidel-Morgenstern)を用いたシミュレーションにより算出した流速等:
原料濃度: 36g/L(ER-806545)
原料流速(ポンプ1): 15mL/min
溶離剤流速(ポンプ2):76.4mL/min
領域IV(ポンプ3)流速:107mL/min
領域II(ポンプ4)流速:134.3mL/min(実流速143.5mL/min)
領域I流速: 183.4mL/min
領域III流速: 149.3mL/min
ラフィネート*流速: 42.3mL/min *ラフィネート=弱く結合した異性体
エキストラクト流速: 49.1mL/min *エキストラクト=強く結合した異性体
接触時間
(ポート切替時間): 0.8864min(53.18sec、実接触時間=54sec)
HPLC充填部: Varian (Rainin) Dynamax Rampak 41/77 mm Column Packing Station
HPLCポンプ: Varian (Rainin) SD-1 Titanium Pump Heads
第1HPLC検出器: Waters R403 Refractive Index detector
第2HPLC検出器: 分取フローセルを備えたVarian (Rainin) UV-1 detector
クロマトグラフィ
制御ソフトウェア: Varian (Rainin) Dynamax DA version 1.4.6
クロマトグラフィ
処理ソフトウェア: Varian (Rainin) Dynamax R version 1.4.3
移動相: 28.5:63.7:7.85 (vol/vol) n-ヘプタン:メチルtert-ブチルエーテル:2-プロパノール
流速: 140mL/min
カラム温度: 室温(25℃)
検出: 屈折率、16×減衰及び215nm UVにおいて陰性
移動相勾配: 勾配なし(isocratic)
Run時間: 40min
インジェクタ容積: 0.8g/mLのER-807527を10ml
実施例4aでは、上述のスキームVに記載のスキームを用いて、F2への中間体であるところの式Aの化合物を調製する代替法が提供される。この方法では、上述の実施例3で調製された中間体ER-812935(化合物4)を利用する。
実施例4bでは、上述のスキームVb及びVcに記載のスキームを用いて、式F−2の化合物を調製する代替法が提供される。この方法では、実施例4aで調製した中間体ER-817664が利用される。
実施例4cでは、上述のスキームVIIに記載のスキームを用いて式F−2の化合物を調製する他の代替法が提供される。この方法では、実施例3で調製した中間体ER-811510が利用され、ここで、シクロヘキサノンの代わりにアセトンが用いられる。
A.(R)又は(S)型のN-[2-(4-イソプロピル-4,5-ジヒドロ-オキサゾール-2-イル)-6-メチル-フェニル]-メタンスルホンアミドの調製
Claims (10)
- 式A、BもしくはC:
〔式中、
は単結合又は二重結合であり;
nは1、2もしくは3であり;
PG5およびPG6のそれぞれは独立してそれが結合している酸素原子と一緒になって、エステル、シリルエーテル、アルキルエーテル、アリールアルキルエーテルおよびアルコキシアルキルエーテルより選択される適切なヒドロキシ保護基であるか、またはPG5およびPG6は一緒になって環状ジオール保護基を形成し、環状ジオール保護基はそれらが結合している酸素原子と一緒になって、環状アセタール、環状ケタール、シリレン誘導体、環状カーボネート、および環状ボロネートより選択され;
WはCH−AもしくはC(O)であり;
AはC1−6の脂肪族基であり、ここでAは任意選択で1つもしくはそれ以上のQ1基によって置換され;
Q1基は独立して、シアノ、ハロ、アジド、オキソ、OR、SR、SO2R、OSO2R、N(R)2、NR(CO)R、NR(CO)(CO)R、NR(CO)N(R)2、NR(CO)OR、(CO)OR、O(CO)R、(CO)N(R)2、O(CO)N(R)2もしくはOPG1より選択され;
ここでPG1は、それが結合している酸素原子と一緒になって、エステル、シリルエーテル、アルキルエーテル、アリールアルキルエーテルおよびアルコキシアルキルエーテルより選択される適切なヒドロキシ保護基であり;
任意選択で、2つのQ1がA上にあり、そして一緒になって、窒素、酸素もしくは硫黄より独立して選択される0〜4個のヘテロ原子を有する、3〜8員の、飽和環、部分的に未飽和の環、又はアリール環を形成し;
それぞれのRは独立して、水素、またはC1−6脂肪族、5〜10員の飽和環、部分的に不飽和の環もしくはアリール炭素環、または窒素、酸素もしくは硫黄より独立して選択される0〜4個のヘテロ原子を有する、4〜10員の、飽和環、部分的に不飽和の環もしくはアリール環より選択される任意に置換された基であり;
ここで、Q1が独立して、N(R)2、NR(CO)N(R)2、(CO)N(R)2およびO(CO)N(R)2より選択されるとき、同じ窒素原子上の2つのR基は任意選択で前記窒素原子と共に、窒素、酸素もしくは硫黄より独立して選択される1〜4個のヘテロ原子を有する、3〜8員の、飽和環、部分的に不飽和の環もしくはアリール環を形成し;そして、
ここで、XBがOでありかつRBがTMSであるか;
XBがHおよびOHでありかつRBがTMSでるか;または
XBがHおよびOAcでありかつRBがAcであり;
そして
R1が−CH2CO2R2でありここでR2がアルキルである〕
の化合物。 - 式:
を持つ、請求項1に記載の化合物。 - 式:
を持つ、請求項2に記載の化合物。 - 式:
を持つ、請求項1に記載の化合物。 - 式:
を持つ、請求項1に記載の化合物。 - 式:
を持つ、請求項1に記載の化合物。 - 式:
を持つ、請求項1に記載の化合物。 - 前記化合物が式Cのものであり、かつR2がメチルである請求項1に記載の化合物。
-
を調製するための方法であって、前記方法が請求項1〜9のいずれかに記載の化合物からB1939を合成する事を含有する、方法。 - 前記化合物が、
および
〔式中、R1が−CH2CO2R2であり、R2がメチルである〕
からなる群より選択される、請求項19に記載の方法。
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