KR100646670B1 - 레르카니디핀 염화수소의 개선된 제조방법 - Google Patents
레르카니디핀 염화수소의 개선된 제조방법 Download PDFInfo
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- KR100646670B1 KR100646670B1 KR1020050014030A KR20050014030A KR100646670B1 KR 100646670 B1 KR100646670 B1 KR 100646670B1 KR 1020050014030 A KR1020050014030 A KR 1020050014030A KR 20050014030 A KR20050014030 A KR 20050014030A KR 100646670 B1 KR100646670 B1 KR 100646670B1
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- South Korea
- Prior art keywords
- lercanidipine
- hydrogen chloride
- represented
- ethyl acetate
- mixed solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 229960004294 lercanidipine Drugs 0.000 title claims abstract description 68
- ZDXUKAKRHYTAKV-UHFFFAOYSA-N lercanidipine Chemical compound COC(=O)C1=C(C)NC(C)=C(C(=O)OC(C)(C)CN(C)CCC(C=2C=CC=CC=2)C=2C=CC=CC=2)C1C1=CC=CC([N+]([O-])=O)=C1 ZDXUKAKRHYTAKV-UHFFFAOYSA-N 0.000 title claims abstract description 68
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 title claims abstract description 36
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910000041 hydrogen chloride Inorganic materials 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 24
- DKAGJZJALZXOOV-UHFFFAOYSA-N hydrate;hydrochloride Chemical compound O.Cl DKAGJZJALZXOOV-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 238000002425 crystallisation Methods 0.000 claims abstract description 16
- 230000008025 crystallization Effects 0.000 claims abstract description 14
- 239000002904 solvent Substances 0.000 claims abstract description 13
- 125000002843 carboxylic acid group Chemical group 0.000 claims abstract description 7
- 239000012190 activator Substances 0.000 claims abstract description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 81
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 21
- 239000011259 mixed solution Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 12
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 11
- -1 aminopropyl alcohol compound Chemical class 0.000 claims description 10
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 claims description 7
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 claims description 7
- JMMWKPVZQRWMSS-UHFFFAOYSA-N isopropanol acetate Natural products CC(C)OC(C)=O JMMWKPVZQRWMSS-UHFFFAOYSA-N 0.000 claims description 7
- 229940011051 isopropyl acetate Drugs 0.000 claims description 7
- OISVCGZHLKNMSJ-UHFFFAOYSA-N 2,6-dimethylpyridine Chemical compound CC1=CC=CC(C)=N1 OISVCGZHLKNMSJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000011541 reaction mixture Substances 0.000 claims description 6
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 claims description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 4
- JVSFQJZRHXAUGT-UHFFFAOYSA-N 2,2-dimethylpropanoyl chloride Chemical compound CC(C)(C)C(Cl)=O JVSFQJZRHXAUGT-UHFFFAOYSA-N 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 3
- RIFGWPKJUGCATF-UHFFFAOYSA-N ethyl chloroformate Chemical compound CCOC(Cl)=O RIFGWPKJUGCATF-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- XWKFPIODWVPXLX-UHFFFAOYSA-N 2-methyl-5-methylpyridine Natural products CC1=CC=C(C)N=C1 XWKFPIODWVPXLX-UHFFFAOYSA-N 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims description 2
- 125000003545 alkoxy group Chemical group 0.000 claims description 2
- PASDCCFISLVPSO-UHFFFAOYSA-N benzoyl chloride Chemical compound ClC(=O)C1=CC=CC=C1 PASDCCFISLVPSO-UHFFFAOYSA-N 0.000 claims description 2
- XMJHPCRAQCTCFT-UHFFFAOYSA-N methyl chloroformate Chemical compound COC(Cl)=O XMJHPCRAQCTCFT-UHFFFAOYSA-N 0.000 claims description 2
- AHWALFGBDFAJAI-UHFFFAOYSA-N phenyl carbonochloridate Chemical compound ClC(=O)OC1=CC=CC=C1 AHWALFGBDFAJAI-UHFFFAOYSA-N 0.000 claims description 2
- IVRIRQXJSNCSPQ-UHFFFAOYSA-N propan-2-yl carbonochloridate Chemical compound CC(C)OC(Cl)=O IVRIRQXJSNCSPQ-UHFFFAOYSA-N 0.000 claims description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 2
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 claims 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 14
- MQWDISMNBYOLAB-UHFFFAOYSA-N 1-[3,3-diphenylpropyl(methyl)amino]-2-methylpropan-2-ol Chemical compound C=1C=CC=CC=1C(CCN(C)CC(C)(C)O)C1=CC=CC=C1 MQWDISMNBYOLAB-UHFFFAOYSA-N 0.000 abstract description 5
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 abstract description 5
- 150000008065 acid anhydrides Chemical class 0.000 abstract description 5
- 238000005886 esterification reaction Methods 0.000 abstract description 4
- TWANEDNNWMQGQY-UHFFFAOYSA-N 1,4-dihydropyridine;hydrochloride Chemical compound Cl.C1C=CNC=C1 TWANEDNNWMQGQY-UHFFFAOYSA-N 0.000 abstract 1
- NFNZTFFUVXNIOO-UHFFFAOYSA-N 5-methoxycarbonyl-2,6-dimethyl-4-(3-nitrophenyl)-3,4-dihydro-1H-pyridine-2-carboxylic acid Chemical group CC1(NC(=C(C(C1)C1=CC(=CC=C1)[N+](=O)[O-])C(=O)OC)C)C(=O)O NFNZTFFUVXNIOO-UHFFFAOYSA-N 0.000 abstract 1
- 230000032050 esterification Effects 0.000 abstract 1
- 235000019439 ethyl acetate Nutrition 0.000 description 23
- 239000000126 substance Substances 0.000 description 15
- 238000006243 chemical reaction Methods 0.000 description 13
- 239000000243 solution Substances 0.000 description 13
- 238000003756 stirring Methods 0.000 description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 239000013078 crystal Substances 0.000 description 8
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- 239000012044 organic layer Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 4
- 239000007810 chemical reaction solvent Substances 0.000 description 4
- 238000000113 differential scanning calorimetry Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 description 4
- JPXPPUOCSLMCHK-UHFFFAOYSA-N 5-methoxycarbonyl-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3-carboxylic acid Chemical compound COC(=O)C1=C(C)NC(C)=C(C(O)=O)C1C1=CC=CC([N+]([O-])=O)=C1 JPXPPUOCSLMCHK-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- 150000008064 anhydrides Chemical group 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- GWYFCOCPABKNJV-UHFFFAOYSA-N isovaleric acid Chemical compound CC(C)CC(O)=O GWYFCOCPABKNJV-UHFFFAOYSA-N 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 238000001308 synthesis method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- WMFYOYKPJLRMJI-UHFFFAOYSA-N Lercanidipine hydrochloride Chemical compound Cl.COC(=O)C1=C(C)NC(C)=C(C(=O)OC(C)(C)CN(C)CCC(C=2C=CC=CC=2)C=2C=CC=CC=2)C1C1=CC=CC([N+]([O-])=O)=C1 WMFYOYKPJLRMJI-UHFFFAOYSA-N 0.000 description 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000007806 chemical reaction intermediate Substances 0.000 description 2
- 229940113088 dimethylacetamide Drugs 0.000 description 2
- 239000000543 intermediate Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229960002162 lercanidipine hydrochloride Drugs 0.000 description 2
- GGCODTGUESSQSU-UHFFFAOYSA-N methyl 4-(3-nitrophenyl)-1,4-dihydropyridine-3-carboxylate Chemical compound [N+](=O)([O-])C=1C=C(C=CC1)C1C(=CNC=C1)C(=O)OC GGCODTGUESSQSU-UHFFFAOYSA-N 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000007363 ring formation reaction Methods 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 125000004191 (C1-C6) alkoxy group Chemical group 0.000 description 1
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 description 1
- RWNNRGBCWXOVAC-UHFFFAOYSA-N 1,4-bis[bis(aziridin-1-yl)phosphoryl]piperazine Chemical compound C1CN1P(N1CCN(CC1)P(=O)(N1CC1)N1CC1)(=O)N1CC1 RWNNRGBCWXOVAC-UHFFFAOYSA-N 0.000 description 1
- 229940127291 Calcium channel antagonist Drugs 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 102000004016 L-Type Calcium Channels Human genes 0.000 description 1
- 108090000420 L-Type Calcium Channels Proteins 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 229940030600 antihypertensive agent Drugs 0.000 description 1
- 239000002220 antihypertensive agent Substances 0.000 description 1
- 125000004104 aryloxy group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004440 column chromatography Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 208000029078 coronary artery disease Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- KQNPFQTWMSNSAP-UHFFFAOYSA-N isobutyric acid Chemical compound CC(C)C(O)=O KQNPFQTWMSNSAP-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000013076 target substance Substances 0.000 description 1
- 206010044008 tonsillitis Diseases 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D25/00—Neckties
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D15/00—Convertible garments
- A41D15/005—Convertible garments reversible garments
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D27/00—Details of garments or of their making
- A41D27/08—Trimmings; Ornaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2437/00—Clothing
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Hydrogenated Pyridines (AREA)
Abstract
Description
Claims (7)
- 다음 화학식 2로 표시되는 카르복시산 유도체와 다음 화학식 3으로 표시되는 아미노프로필알콜 화합물을 반응시켜 다음 화학식 1로 표시되는 레르카니디핀(Lercanidipine)을 제조하는 방법에 있어서,ⅰ) 트리에틸아민, 디이소프로필에틸아민, 피리딘, 2,6-루티딘 및 모어포린 중에서 선택된 유기아민 염기의 존재 하에서 다음 화학식 2로 표시되는 카르복시산 유도체를 R-C(O)-Cl(이때, R은 C1-C6의 알킬기, C1-C6의 알콕시기, 페닐기, 또는 페녹시기)로 표시되는 활성화제와 반응시켜 카르복시산 그룹을 활성화시킨 후에, 다음 화학식 3으로 표시되는 아미노프로필알콜 화합물과 반응시켜 다음 화학식 1a로 표시되는 레르카니디핀 염화수소 수화물(hydrate)을 제조하는 과정;ⅱ) 상기 반응혼합액 중의 레르카니디핀 염화수소 수화물(hydrate)을 에틸아세테이트/물/헥산의 혼합용액으로부터 결정화하여 수득하는 과정; 및ⅲ) 상기 결정으로 수득한 레르카니디핀 염화수소 수화물(hydrate)을 에틸아세테이트/메틸이소부틸케톤의 혼합용액 또는 에틸아세테이트/이소프로필아세테이트의 혼합용액으로 결정화하여, 다음 화학식 1b로 표시되는 무수(anhydrous) 형태의 레르카니디핀 염화수소로 전환하는 과정이 포함되어 이루어지는 것을 특징으로 하는 제조방법 :
- 삭제
- 제 1 항에 있어서, 상기 R-C(O)-Cl로 표시되는 활성화제는 트리메틸 아세틸클로라이드, 벤조일 클로라이드, 메틸 클로로포르메이트, 에틸 클로로포르메이트, 이소프로필 클로로포르메이트 및 페닐 클로로포르메이트 중에서 선택되는 것을 특징으로 하는 제조방법.
- 제 1 항에 있어서, 상기 ⅱ)반응혼합액 중의 레르카니디핀 염화수소 수화물(hydrate)을 결정화하는 용매로는 에틸아세테이트/물/헥산이 1/1/1 내지 1/7/7 부피비를 이루는 혼합용액을 사용하는 것을 특징으로 하는 제조방법.
- 제 1 항에 있어서, 상기 ⅲ)레르카니디핀 염화수소 수화물(hydrate)을 무수물(anhydrous)로 전환하는 결정화 용매로는 에틸아세테이트/메틸이소부틸케톤이 1:3 내지 3:1 부피비로 혼합된 혼합용액, 또는 에틸아세테이트/이소프로필아세테이트가 1:3 내지 3:1 부피비로 혼합된 혼합용액을 사용하는 것을 특징으로 하는 제조방법.
- 제 5 항에 있어서, 상기 혼합용액을 레르카니디핀 염화수소 수화물(hydrate) 1 g에 대하여 3 내지 10 mL 범위로 사용하는 것을 특징으로 하는 제조방법.
- 제 6 항에 있어서, 상기 혼합용액을 레르카니디핀 염화수소 수화물(hydrate) 1 g에 대하여 4 내지 7 mL 범위로 사용하는 것을 특징으로 하는 제조방법.
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KR1020050014030A KR100646670B1 (ko) | 2005-02-21 | 2005-02-21 | 레르카니디핀 염화수소의 개선된 제조방법 |
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KR1020050014030A KR100646670B1 (ko) | 2005-02-21 | 2005-02-21 | 레르카니디핀 염화수소의 개선된 제조방법 |
Publications (2)
Publication Number | Publication Date |
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KR20060093200A KR20060093200A (ko) | 2006-08-24 |
KR100646670B1 true KR100646670B1 (ko) | 2006-11-23 |
Family
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Family Applications (1)
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KR1020050014030A Expired - Fee Related KR100646670B1 (ko) | 2005-02-21 | 2005-02-21 | 레르카니디핀 염화수소의 개선된 제조방법 |
Country Status (1)
Country | Link |
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KR (1) | KR100646670B1 (ko) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100821165B1 (ko) * | 2006-03-10 | 2008-04-14 | 동우신테크 주식회사 | 레르카니디핀 염산염의 제조 방법 |
WO2008082041A1 (en) * | 2006-12-29 | 2008-07-10 | Dongwoo Syntech Co., Ltd | Process for preparing lercanidipine hydrochloride |
KR100928995B1 (ko) * | 2007-10-31 | 2009-11-26 | (주)에이에스텍 | 무정형 무수 염산 레르카니디핀 및 그것의 개선된 제조방법 |
CN102516160B (zh) * | 2011-12-16 | 2014-04-02 | 华润赛科药业有限责任公司 | 一种高纯盐酸乐卡地平的合成工艺 |
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