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【结 构 式】

【分子编号】13814

【品名】(1R,3aS,4S,5R,6aS)-5-[[tert-Butyl(dimethyl)silyl]oxy]-4-((E,3S)-3-[[tert-butyl(dimethyl)silyl]oxy]-1-octenyl)-2-methyleneoctahydro-1-pentalenol

【CA登记号】

【 分 子 式 】C29H56O3Si2

【 分 子 量 】508.93284

【元素组成】C 68.44% H 11.09% O 9.43% Si 11.04%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(XC)

8) The condensation of the cyclopentenone (LXXXI) with the organocuprate (LXXXII) gives the condensed enolate (LXXXIII), which is coupled with 3-(trimethylsilyl)-2-propynyl iodide (LXXXIV) to yield the acetylenic cyclopentanone (LXXXV). The methylenation of (LXXXV) with Zn/CH2Br2/TiCl4 as before gives compound (LXXXVI), which by selective hydroboration as usual is converted into the hydroxymethyl derivative (LXXXVII). The selective desilylation of the protected acetylene of (LXXXVII) affords (LXXXVIII), which is oxidized as usual to the corresponding aldehyde (LXXXIX). The reductive cyclization of (LXXXIX) gives the bicyclic alcohol (XC), which is treated with tosyl chloride and DMAP in dichloromethane to yield (XCI). Finally, this compound is alkylated with methyl 4-iodobutyrate (XCII)/Zn/Cu2(CN)2 in THF affording the bisilylated clinprost derivative (XCIII) that was desilylated with TBAF as usual. 9) The alkylation of the exocyclic methylene double bond of the bicyclic alcohol (XC) can also be performed by treating (XC) first with diethyl chlorophosphate and BuLi, and then with 4-iodobutyrate (XCII)/Zn/Cu2Cl2 in THF to obtain the previously reported bisilylated clinprost (XCIII). 10) The preceding alkylation of bicyclic alcohol (XC) can also be performed using p-toluenesulfonyl chloride instead of diethyl chlorophosphate.

1 Graul, A.; Leeson, P.; Castaner, J.; Clinprost. Drugs Fut 1997, 22, 6, 608.
2 Tanaka, T.; Bannai, K.; Hazato, A.; Koga, M.; Kurozumi, S.; Kato, Y.; Short synthesis of isocarbacyclin by regioselective SN2' alkylation of bicyclic allylic esters with zinc-copper reagents. Tetrahedron 1991, 47, 10-11, 1861-76.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(LXXXI) 13805 (4R)-4-[[tert-Butyl(dimethyl)silyl]oxy]-2-cyclopenten-1-one C11H20O2Si 详情 详情
(LXXXII) 13806 Bis[3(S)-(tert-Butyldimethylsilyloxy)-1(E)-octenyl] copper magnesium chloride C39H82O5 详情 详情
(LXXXIII) 13807 (3R,4R)-4-[[(tert-Butyl)(dimethyl)silyl]oxy]-3-((E,3S)-3-[[(tert-butyl)(dimethyl)silyl]oxy]-1-octenyl)-1-cyclopenten-1-ol chloromagnesium salt C25H49ClMgO3Si2 详情 详情
(LXXXIV) 13808 (3-Iodo-1-propynyl)(trimethyl)silane C6H11ISi 详情 详情
(LXXXV) 13809 (2R,3R,4R)-4-[[tert-Butyl(dimethyl)silyl]oxy]-3-((E,3S)-3-[[tert-butyl(dimethyl)silyl]oxy]-1-octenyl)-2-[3-(trimethylsilyl)-2-propynyl]cyclopentanone C31H60O3Si3 详情 详情
(LXXXVI) 13810 tert-Butyl[((1S,2E)-3-[(1R,2R,5R)-5-[[tert-butyl(dimethyl)silyl]oxy]-3-methylene-2-[3-(trimethylsilyl)-2-propynyl]cyclopentyl]-1-pentyl-2-propenyl)oxy]dimethylsilane C32H62O2Si3 详情 详情
(LXXXVII) 13811 [(1S,2S,3S,4R)-4-[[tert-Butyl(dimethyl)silyl]oxy]-3-((E,3S)-3-[[tert-butyl(dimethyl)silyl]oxy]-1-octenyl)-2-[3-(trimethylsilyl)-2-propynyl]cyclopentyl]methanol C32H64O3Si3 详情 详情
(LXXXVIII) 13812 [(1S,2S,3S,4R)-4-[[tert-Butyl(dimethyl)silyl]oxy]-3-((E,3S)-3-[[tert-butyl(dimethyl)silyl]oxy]-1-octenyl)-2-(2-propynyl)cyclopentyl]methanol C29H56O3Si2 详情 详情
(LXXXIX) 13813 (1S,2R,3R,4R)-4-[[tert-Butyl(dimethyl)silyl]oxy]-3-((E,3S)-3-[[tert-butyl(dimethyl)silyl]oxy]-1-octenyl)-2-(2-propynyl)cyclopentanecarbaldehyde C29H54O3Si2 详情 详情
(XC) 13814 (1R,3aS,4S,5R,6aS)-5-[[tert-Butyl(dimethyl)silyl]oxy]-4-((E,3S)-3-[[tert-butyl(dimethyl)silyl]oxy]-1-octenyl)-2-methyleneoctahydro-1-pentalenol C29H56O3Si2 详情 详情
(XCI) 13815 ([(1S,2E)-3-[(1S,2R,3aS,6aS)-2-[[tert-Butyl(dimethyl)silyl]oxy]-5-(chloromethyl)-1,2,3,3a,6,6a-hexahydro-1-pentalenyl]-1-pentyl-2-propenyl]oxy)(tert-butyl)dimethylsilane C29H55ClO2Si2 详情 详情
(XCII) 13816 Methyl 4-iodobutyrate; Methyl 4-iodobutanoate 14273-85-9 C5H9IO2 详情 详情
(XCIII) 13817 methyl 5-[(3aS,5R,6S,6aS)-5-[[tert-butyl(dimethyl)silyl]oxy]-6-((E,3S)-3-[[tert-butyl(dimethyl)silyl]oxy]-1-octenyl)-1,3a,4,5,6,6a-hexahydro-2-pentalenyl]pentanoate C34H64O4Si2 详情 详情
Extended Information