【结 构 式】 ![]() |
【药物名称】SB-T-12843 【化学名称】[2aR-[2aalpha,4beta,4abeta,6beta,9alpha(2R,3R),10beta,11beta,12alpha,12aalpha,12balpha]]-12b-Acetoxy-12-benzoyloxy-9-[3-(tert-butoxycarbonylamino)-4,4-difluoro-2-hydroxybutyryloxy]-6-(3,3-dimethylbutyryloxy)-4,11-dihydroxy-4a,8,13,13-tetramethyl-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benz[1,2-b]oxet-5-one 【CA登记号】 【 分 子 式 】C44H59F2NO15 【 分 子 量 】879.95533 |
【开发单位】State University of New York,Stony Brook (Originator) 【药理作用】Oncolytic Drugs, Antimitotic Drugs, Microtubule-Stabilizing Agents, Taxanes |
合成路线1
Lithium enolate (II), generated from chiral ester (I) and LDA at -84 C, was cyclocondensed with imine (III) to furnish azetidinone (IV). Ozonolysis of the olefinic bond of (IV) at -78 C in CH2Cl2-MeOH, followed by reductive workup using Me2S afforded aldehyde (V). Subsequent treatment of (V) with diethylaminosulfur trifluoride in CH2Cl2 at r.t. yielded the difluoromethyl lactam (VI). Then, the N-p-methoxyphenyl group of (VI) was removed by oxidative treatment with ceric ammonium nitrate at -5 C, and the resulting azetidinone was N-protected with Boc2O to afford tert-butyl carbamate (VII)
【1】 Lin, S.; et al.; Syntheses and biological activity of advanced second-generation taxoids. 216th ACS Natl Meet (Aug. 23-27, Boston) 1998, Abst MEDI 315. |
【2】 Ferlini, C.; Scambia, G.; Lin, S.; Bernacki, R.J.; Ojima, I.; Wang, T.; Pera, P.; Slater, J.C.; Syntheses and biological activity of C3'-difluoromethyl taxoids. 218th ACS Natl Meet (Aug 22 1999, New Orleans) 1999, Abst MEDI 39. |
【3】 Pera, P.; Scambia, G.; Ojima, I.; Lin, S.; Wang, T.; Ferlini, C.; Slater, J.C.; Bernacki, R.J.; Syntheses and biological activity of C-3'-difluoromethyl-taxoids. Bioorg Med Chem Lett 2000, 8, 7, 1619. |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(I) | 19151 | (1R,2S)-2-phenylcyclohexyl 2-[(triisopropylsilyl)oxy]acetate | C23H38O3Si | 详情 | 详情 | |
(II) | 21730 | 2-(Triisopropylsilyloxy)-1-(2(S)-phenyl-1(R)-cyclohexyl)vinyl-1-ol lithium salt | C23H37LiO3Si | 详情 | 详情 | |
(III) | 19154 | 4-methoxy-N-[(E)-3-methyl-2-butenylidene]aniline; N-(4-methoxyphenyl)-N-[(E)-3-methyl-2-butenylidene]amine | C12H15NO | 详情 | 详情 | |
(IV) | 21732 | (3R,4S)-1-(4-methoxyphenyl)-4-[(E)-1-propenyl]-3-[(triisopropylsilyl)oxy]-2-azetidinone | C22H35NO3Si | 详情 | 详情 | |
(V) | 21733 | (2R,3R)-1-(4-methoxyphenyl)-4-oxo-3-[(triisopropylsilyl)oxy]-2-azetidinecarbaldehyde | C20H31NO4Si | 详情 | 详情 | |
(VI) | 21734 | (3R,4R)-4-(difluoromethyl)-1-(4-methoxyphenyl)-3-[(triisopropylsilyl)oxy]-2-azetidinone | C20H31F2NO3Si | 详情 | 详情 | |
(VII) | 21735 | tert-butyl (2R,3R)-2-(difluoromethyl)-4-oxo-3-[(triisopropylsilyl)oxy]-1-azetidinecarboxylate | C18H33F2NO4Si | 详情 | 详情 |
合成路线2
The C-7 hydroxyl group of 10-deacetyl baccatin III (VIII) was selectively protected with triethylsilyl chloride and imidazole to yield silyl ether (IX). Subsequent selective acylation of (IX) at C-10 hydroxyl group with acid chloride (X) in the presence of LiN(SiMe3)2 afforded ester (XI). The title taxoid was then obtained by further coupling of (XI) with b-lactam (VII) using LiN(SiMe3)2 in THF at low temperature, followed by desilylation with HF in pyridine
【1】 Lin, S.; et al.; Syntheses and biological activity of advanced second-generation taxoids. 216th ACS Natl Meet (Aug. 23-27, Boston) 1998, Abst MEDI 315. |
【2】 Ferlini, C.; Scambia, G.; Lin, S.; Bernacki, R.J.; Ojima, I.; Wang, T.; Pera, P.; Slater, J.C.; Syntheses and biological activity of C3'-difluoromethyl taxoids. 218th ACS Natl Meet (Aug 22 1999, New Orleans) 1999, Abst MEDI 39. |
【3】 Pera, P.; Scambia, G.; Ojima, I.; Lin, S.; Wang, T.; Ferlini, C.; Slater, J.C.; Bernacki, R.J.; Syntheses and biological activity of C-3'-difluoromethyl-taxoids. Bioorg Med Chem Lett 2000, 8, 7, 1619. |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(VII) | 21735 | tert-butyl (2R,3R)-2-(difluoromethyl)-4-oxo-3-[(triisopropylsilyl)oxy]-1-azetidinecarboxylate | C18H33F2NO4Si | 详情 | 详情 | |
(VIII) | 10467 | (1S,2S,3R,4S,7R,9S,10S,12R,15S)-4-(acetoxy)-1,9,12,15-tetrahydroxy-10,14,17,17-tetramethyl-11-oxo-6-oxatetracyclo[11.3.1.0(3,10).0(4,7)]heptadec-13-en-2-yl benzoate | 32981-86-5 | C29H36O10 | 详情 | 详情 |
(IX) | 21737 | (1S,2S,3R,4S,7R,9S,10S,12R,15S)-4-(acetoxy)-1,12,15-trihydroxy-10,14,17,17-tetramethyl-11-oxo-9-[(triethylsilyl)oxy]-6-oxatetracyclo[11.3.1.0(3,10).0(4,7)]heptadec-13-en-2-yl benzoate | C35H50O10Si | 详情 | 详情 | |
(X) | 21738 | 3,3-dimethylbutanoyl chloride | 7065-46-5 | C6H11ClO | 详情 | 详情 |
(XI) | 21739 | (1S,2S,3R,4S,7R,9S,10S,12R,15S)-4-(acetoxy)-12-[(3,3-dimethylbutanoyl)oxy]-1,15-dihydroxy-10,14,17,17-tetramethyl-11-oxo-9-[(triethylsilyl)oxy]-6-oxatetracyclo[11.3.1.0(3,10).0(4,7)]heptadec-13-en-2-yl benzoate | C41H60O11Si | 详情 | 详情 |