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【结 构 式】 
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【分子编号】63145 【品名】2-{(2R,6R)-6-[(2S,6S,7E,10S,11S,12E)-11-[(4-methoxybenzyl)oxy]-6-(methoxymethoxy)-2-methyl-13-[(2S)-4-methyl-3,6-dihydro-2H-pyran-2-yl]-4-methylene-10-(tetrahydro-2H-pyran-2-yloxy)-7,12-tridecadienyl]-5,6-dihydro-2H-pyran-2-yl}acetaldehyde 【CA登记号】 |
【 分 子 式 】C43H62O9 【 分 子 量 】722.95988 【元素组成】C 71.44% H 8.64% O 19.92% |
合成路线1
该中间体在本合成路线中的序号：(L)The condensation of carbaldehyde (XLVII) with the intermediate Pmb-protected phenyl sulfone (XXIII) by means of BuLi, Ac2O and Na/Hg gives the linear adduct (XLVIII), which is protected at its free OH group by means of DHP and PPTS, and selectively deprotected with TBAF yielding the primary alcohol (XLIX). The oxidation of (XLIX) with DMP affords the acetaldehyde derivative (L), which is condensed with CBr4 and PPh3 to provide the dibromovinyl derivative (LI). The condensation of (LI) with methyl chloroformate (LII) by means of BuLi gives the acetylenic ester (LIII), which is treated with CSA to eliminate the THP protecting group and yield the hydroxy ester (LIV). The hydrolysis of the ester (LIV) with LiOH in THF/water affords the hydroxyacid (LV).
| 【1】 Ghosh, A.K.; Wang, Y.; Kim, J.T.; Total synthesis of microtubule-stabilizing agent (-)-laulimalide. J Org Chem 2001, 66, 26, 8973. |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (XXIII) | 63121 | (3S,4S,5E)-4-[(4-methoxybenzyl)oxy]-6-[(2S)-4-methyl-3,6-dihydro-2H-pyran-2-yl]-1-(phenylsulfonyl)-5-hexen-3-ol | C26H32O6S | 详情 | 详情 | |
| (XLVII) | 63142 | (2S)-4-{(2S)-3-[(2R,6R)-6-(2-{[tert-butyl(dimethyl)silyl]oxy}ethyl)-3,6-dihydro-2H-pyran-2-yl]-2-methylpropyl}-2-(methoxymethoxy)-4-pentenal | C24H44O5Si | 详情 | 详情 | |
| (XLVIII) | 63143 | (1E,3S,4S,6E,8S)-10-{(2S)-3-[(2R,6R)-6-(2-{[tert-butyl(dimethyl)silyl]oxy}ethyl)-3,6-dihydro-2H-pyran-2-yl]-2-methylpropyl}-3-[(4-methoxybenzyl)oxy]-8-(methoxymethoxy)-1-[(2S)-4-methyl-3,6-dihydro-2H-pyran-2-yl]-1,6,10-undecatrien-4-ol | C44H70O8Si | 详情 | 详情 | |
| (XLIX) | 63144 | 2-{(2R,6R)-6-[(2S,6S,7E,10S,11S,12E)-11-[(4-methoxybenzyl)oxy]-6-(methoxymethoxy)-2-methyl-13-[(2S)-4-methyl-3,6-dihydro-2H-pyran-2-yl]-4-methylene-10-(tetrahydro-2H-pyran-2-yloxy)-7,12-tridecadienyl]-5,6-dihydro-2H-pyran-2-yl}-1-ethanol | C43H64O9 | 详情 | 详情 | |
| (L) | 63145 | 2-{(2R,6R)-6-[(2S,6S,7E,10S,11S,12E)-11-[(4-methoxybenzyl)oxy]-6-(methoxymethoxy)-2-methyl-13-[(2S)-4-methyl-3,6-dihydro-2H-pyran-2-yl]-4-methylene-10-(tetrahydro-2H-pyran-2-yloxy)-7,12-tridecadienyl]-5,6-dihydro-2H-pyran-2-yl}acetaldehyde | C43H62O9 | 详情 | 详情 | |
| (LI) | 63146 | (1S,3E,5S)-7-{(2S)-3-[(2R,6R)-6-(3,3-dibromo-2-propenyl)-3,6-dihydro-2H-pyran-2-yl]-2-methylpropyl}-1-{(1S,2E)-1-[(4-methoxybenzyl)oxy]-3-[(2S)-4-methyl-3,6-dihydro-2H-pyran-2-yl]-2-propenyl}-5-(methoxymethoxy)-3,7-octadienyl tetrahydro-2H-pyran-2-yl ether 2-{[(1S,3E,5S)-7-{(2S)-3-[(2R,6R)-6-(3,3-dibromo-2-propenyl)-3,6-dihydro-2H-pyran-2-yl]-2-methylpropyl}-1-{(1S,2E)-1-[(4-methoxybenzyl)oxy]-3-[(2S)-4-methyl-3,6-dihydro-2H-pyran-2-yl]-2-propenyl}-5-(methoxymethoxy)-3,7-octadienyl]oxy}tetrahydro-2H-pyran | C44H62Br2O8 | 详情 | 详情 | |
| (LII) | 16993 | methyl chlorocarbonate;Carbonochloridic acid methyl ester；[(chlorocarbonyl)oxy]methane；methyl chloroformate | 79-22-1 | C2H3ClO2 | 详情 | 详情 |
| (LIII) | 63147 | methyl 4-{(2R,6R)-6-[(2S,6S,7E,10S,11S,12E)-11-[(4-methoxybenzyl)oxy]-6-(methoxymethoxy)-2-methyl-13-[(2S)-4-methyl-3,6-dihydro-2H-pyran-2-yl]-4-methylene-10-(tetrahydro-2H-pyran-2-yloxy)-7,12-tridecadienyl]-5,6-dihydro-2H-pyran-2-yl}-2-butynoate | C46H64O10 | 详情 | 详情 | |
| (LIV) | 63148 | methyl 4-((2R,6R)-6-{(2S,6S,7E,10S,11S,12E)-10-hydroxy-11-[(4-methoxybenzyl)oxy]-6-(methoxymethoxy)-2-methyl-13-[(2S)-4-methyl-3,6-dihydro-2H-pyran-2-yl]-4-methylene-7,12-tridecadienyl}-5,6-dihydro-2H-pyran-2-yl)-2-butynoate | C41H56O9 | 详情 | 详情 | |
| (LV) | 63149 | 4-((2R,6R)-6-{(2S,6S,7E,10S,11S,12E)-10-hydroxy-11-[(4-methoxybenzyl)oxy]-6-(methoxymethoxy)-2-methyl-13-[(2S)-4-methyl-3,6-dihydro-2H-pyran-2-yl]-4-methylene-7,12-tridecadienyl}-5,6-dihydro-2H-pyran-2-yl)-2-butynoic acid | C40H54O9 | 详情 | 详情 |