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【结 构 式】 
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【分子编号】44461 【品名】benzyl 4-iodobutyl ether; 1-[(4-iodobutoxy)methyl]benzene 【CA登记号】 |
【 分 子 式 】C11H15IO 【 分 子 量 】290.14397 【元素组成】C 45.54% H 5.21% I 43.74% O 5.51% |
合成路线1
该中间体在本合成路线中的序号：(XVIII)Assembly of the final product: The condensation of SAMP hydrazone (XVII) with 4-(benzyloxy)butyl iodide (XVIII) by means of LDA in THF gives the chiral 2-methylhexanal hydrazone (XIX), which is ozonolyzed in dichloromethane, yielding the free aldehyde (XX). The reduction of (XX) with NaBH4 in methanol affords the corresponding alcohol (XXI), which is protected with Tbdms-Cl and TEA in dichloromethane, providing the silyl ether (XXII). The hydrogenolysis of (XXII) with H2 over Pd/C in THF furnishes the alcohol (XXIII), which is oxidized to the aldehyde (XXIV) with oxalyl chloride, DMSO and TEA in dichloromethane. The condensation of aldehyde (XXIV) with the intermediate phosphonium salt (XVI) by means of NaHMDS in THF gives the silylated diol (XXV), which is selectively monodesilylated with CSA in dichloromethane/methanol to yield the primary alcohol (XXVI). The oxidation of (XXVI) with SO3/pyridine, DMSO and TEA in dichloromethane affords the corresponding aldehyde (XXVII), which is condensed with the oxoacid intermediate (VI) by means of LDA in THF to provide the linear heptadecadienoic acid (XXVIII) as a diastereomeric mixture.
| 【1】 Nicolaou, K.C.; et al.; Total syntheses of epothilones A and B via a macrolactonization-based strategy. J Am Chem Soc 1997, 119, 34, 7974. |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (VI) | 43166 | (3S)-3-[[tert-butyl(dimethyl)silyl]oxy]-4,4-dimethyl-5-oxoheptanoic acid | C15H30O4Si | 详情 | 详情 | |
| (XVI) | 44459 | [(3S,4E)-3-[[tert-butyl(dimethyl)silyl]oxy]-4-methyl-5-(2-methyl-1,3-thiazol-4-yl)-4-pentenyl](triphenyl)phosphonium iodide | C34H43INOPSSi | 详情 | 详情 | |
| (XVII) | 44460 | N-[(2R)-2-methoxypyrrolidinyl]-N-[(E)propylidene]amine; (2R)-2-methoxy-N-[(E)propylidene]-1-pyrrolidinamine | C8H16N2O | 详情 | 详情 | |
| (XVIII) | 44461 | benzyl 4-iodobutyl ether; 1-[(4-iodobutoxy)methyl]benzene | C11H15IO | 详情 | 详情 | |
| (XIX) | 44462 | N-[(E,2S)-6-(benzyloxy)-2-methylhexylidene]-N-[(2R)-2-methoxypyrrolidinyl]amine; (2R)-N-[(E,2S)-6-(benzyloxy)-2-methylhexylidene]-2-methoxy-1-pyrrolidinamine | C19H30N2O2 | 详情 | 详情 | |
| (XX) | 44463 | (2S)-6-(benzyloxy)-2-methylhexanal | C14H20O2 | 详情 | 详情 | |
| (XXI) | 44464 | (2S)-6-(benzyloxy)-2-methyl-1-hexanol | C14H22O2 | 详情 | 详情 | |
| (XXII) | 44465 | benzyl (5S)-6-[[tert-butyl(dimethyl)silyl]oxy]-5-methylhexyl ether; [[(2S)-6-(benzyloxy)-2-methylhexyl]oxy](tert-butyl)dimethylsilane | C20H36O2Si | 详情 | 详情 | |
| (XXIII) | 44466 | (5S)-6-[[tert-butyl(dimethyl)silyl]oxy]-5-methyl-1-hexanol | C13H30O2Si | 详情 | 详情 | |
| (XXIV) | 43163 | (5S)-6-[[tert-butyl(dimethyl)silyl]oxy]-5-methylhexanal | C13H28O2Si | 详情 | 详情 | |
| (XXV) | 44467 | 4-((1E,3S,5Z,10S)-3,11-bis[[tert-butyl(dimethyl)silyl]oxy]-2,10-dimethyl-1,5-undecadienyl)-2-methyl-1,3-thiazole; tert-butyl(dimethyl)silyl (2S,6Z,9S,10E)-9-[[tert-butyl(dimethyl)silyl]oxy]-2,10-dimethyl-11-(2-methyl-1,3-thiazol-4-yl)-6,10-undecadienyl ether | C29H55NO2SSi2 | 详情 | 详情 | |
| (XXVI) | 44468 | (2S,6Z,9S,10E)-9-[[tert-butyl(dimethyl)silyl]oxy]-2,10-dimethyl-11-(2-methyl-1,3-thiazol-4-yl)-6,10-undecadien-1-ol | C23H41NO2SSi | 详情 | 详情 | |
| (XXVII) | 44469 | (2S,6Z,9S,10E)-9-[[tert-butyl(dimethyl)silyl]oxy]-2,10-dimethyl-11-(2-methyl-1,3-thiazol-4-yl)-6,10-undecadienal | C23H39NO2SSi | 详情 | 详情 | |
| (XXVIII) | 44470 | (3S,6R,7S,8S,12Z,15S,16E)-3,15-bis[[tert-butyl(dimethyl)silyl]oxy]-7-hydroxy-4,4,6,8,16-pentamethyl-17-(2-methyl-1,3-thiazol-4-yl)-5-oxo-12,16-heptadecadienoic acid | C38H69NO6SSi2 | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号：(XVIII)Assembly of the final product: The condensation of SAMP hydrazone (XVII) with 4-(benzyloxy)butyl iodide (XVIII) by means of LDA in THF gives the chiral 2-methylhexanal hydrazone (XIX), which is ozonolyzed in dichloromethane, yielding the free aldehyde (XX). The reduction of (XX) with NaBH4 in methanol affords the corresponding alcohol (XXI), which is protected with Tbdms-Cl and TEA in dichloromethane, providing the silyl ether (XXII). The hydrogenolysis of (XXII) with H2 over Pd/C in THF furnishes the alcohol (XXIII), which is oxidized to the aldehyde (XXIV) with oxalyl chloride, DMSO and TEA in dichloromethane. The methylation of aldehyde (XXIV) with Me-MgBr in THF gives the secondary alcohol (XXV), which is oxidized with tetrapropylammonium perruthenate (TPAP) in dichloromethane, yielding the methyl ketone (XXVI). The condensation of ketone (XXVI) with the intermediate phosphonium salt (XVI) by means of NaHMDS in THF gives the silylated diol (XXVII), which is selectively monodesilylated with CSA in dichloromethane/methanol to yield the primary alcohol (XXVIII). The oxidation of (XXVIII) with SO3/pyridine, DMSO and TEA in dichloromethane affords the corresponding aldehyde (XXIX), which is condensed with the oxoacid intermediate (VI) by means of LDA in THF to provide the linear heptadecadienoic acid (XXX) as a diastereomeric mixture that is separated at the carboxylic acid (XXXII) step.
| 【1】 Nicolaou, K.C.; et al.; Total syntheses of epothilones A and B via a macrolactonization-based strategy. J Am Chem Soc 1997, 119, 34, 7974. |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (VI) | 43166 | (3S)-3-[[tert-butyl(dimethyl)silyl]oxy]-4,4-dimethyl-5-oxoheptanoic acid | C15H30O4Si | 详情 | 详情 | |
| (XVI) | 44459 | [(3S,4E)-3-[[tert-butyl(dimethyl)silyl]oxy]-4-methyl-5-(2-methyl-1,3-thiazol-4-yl)-4-pentenyl](triphenyl)phosphonium iodide | C34H43INOPSSi | 详情 | 详情 | |
| (XVII) | 44460 | N-[(2R)-2-methoxypyrrolidinyl]-N-[(E)propylidene]amine; (2R)-2-methoxy-N-[(E)propylidene]-1-pyrrolidinamine | C8H16N2O | 详情 | 详情 | |
| (XVIII) | 44461 | benzyl 4-iodobutyl ether; 1-[(4-iodobutoxy)methyl]benzene | C11H15IO | 详情 | 详情 | |
| (XIX) | 44462 | N-[(E,2S)-6-(benzyloxy)-2-methylhexylidene]-N-[(2R)-2-methoxypyrrolidinyl]amine; (2R)-N-[(E,2S)-6-(benzyloxy)-2-methylhexylidene]-2-methoxy-1-pyrrolidinamine | C19H30N2O2 | 详情 | 详情 | |
| (XX) | 44463 | (2S)-6-(benzyloxy)-2-methylhexanal | C14H20O2 | 详情 | 详情 | |
| (XXI) | 44464 | (2S)-6-(benzyloxy)-2-methyl-1-hexanol | C14H22O2 | 详情 | 详情 | |
| (XXII) | 44465 | benzyl (5S)-6-[[tert-butyl(dimethyl)silyl]oxy]-5-methylhexyl ether; [[(2S)-6-(benzyloxy)-2-methylhexyl]oxy](tert-butyl)dimethylsilane | C20H36O2Si | 详情 | 详情 | |
| (XXIII) | 44466 | (5S)-6-[[tert-butyl(dimethyl)silyl]oxy]-5-methyl-1-hexanol | C13H30O2Si | 详情 | 详情 | |
| (XXIV) | 43163 | (5S)-6-[[tert-butyl(dimethyl)silyl]oxy]-5-methylhexanal | C13H28O2Si | 详情 | 详情 | |
| (XXV) | 46120 | (6S)-7-[[tert-butyl(dimethyl)silyl]oxy]-6-methyl-2-heptanol | C14H32O2Si | 详情 | 详情 | |
| (XXVI) | 46121 | (6S)-7-[[tert-butyl(dimethyl)silyl]oxy]-6-methyl-2-heptanone | C14H30O2Si | 详情 | 详情 | |
| (XXVII) | 40827 | tert-butyl(dimethyl)silyl (1S,3Z,8S)-9-[[tert-butyl(dimethyl)silyl]oxy]-4,8-dimethyl-1-[(E)-1-methyl-2-(2-methyl-1,3-thiazol-4-yl)ethenyl]-3-nonenyl ether; 4-((1E,3S,5Z,10S)-3,11-bis[[tert-butyl(dimethyl)silyl]oxy]-2,6,10-trimethyl-1,5-undecadienyl)-2-methyl-1,3-thiazole | C30H57NO2SSi2 | 详情 | 详情 | |
| (XXVIII) | 40828 | (2S,6Z,9S,10E)-9-[[tert-butyl(dimethyl)silyl]oxy]-2,6,10-trimethyl-11-(2-methyl-1,3-thiazol-4-yl)-6,10-undecadien-1-ol | C24H43NO2SSi | 详情 | 详情 | |
| (XXIX) | 40829 | (2S,6Z,9S,10E)-9-[[tert-butyl(dimethyl)silyl]oxy]-2,6,10-trimethyl-11-(2-methyl-1,3-thiazol-4-yl)-6,10-undecadienal | C24H41NO2SSi | 详情 | 详情 | |
| (XXX) | 46118 | (3S,6R,7S,8S,12Z,15S,16E)-3,15-bis[[tert-butyl(dimethyl)silyl]oxy]-7-hydroxy-4,4,6,8,12,16-hexamethyl-17-(2-methyl-1,3-thiazol-4-yl)-5-oxo-12,16-heptadecadienoic acid | C39H71NO6SSi2 | 详情 | 详情 |
合成路线3
该中间体在本合成路线中的序号：(XVIII)Assembly of the final product: The condensation of SAMP hydrazone (XVII) with 4-(benzyloxy)butyl iodide (XVIII) by means of LDA in THF gives the chiral 2-methylhexanal hydrazone (XIX), which is ozonolyzed in dichloromethane, yielding the free aldehyde (XX). The reduction of (XX) with NaBH4 in methanol affords the corresponding alcohol (XXI), which is protected with Tbdms-Cl and TEA in dichloromethane, providing the silyl ether (XXII). The hydrogenolysis of (XXII) with H2 over Pd/C in THF furnishes the alcohol (XXIII), which is oxidized to the aldehyde (XXIV) with oxalyl chloride, DMSO and TEA in dichloromethane. The condensation of aldehyde (XXIV) with the intermediate phosphonium salt (XVI) by means of NaHMDS in THF gives the silylated diol (XXV), which is selectively monodesilylated with CSA in dichloromethane/methanol to yield the primary alcohol (XXVI). The oxidation of (XXVI) with SO3/pyridine, DMSO and TEA in dichloromethane affords the corresponding aldehyde (XXVII), which is condensed with the oxoacid intermediate (VI) by means of LDA in THF to provide the linear heptadecadienoic acid (XXVIII) as a diastereomeric mixture that is separated at the carboxylic acid (XXX) step. The fully silylation of (XVIII) with Tbdms-OTf and lutidine in dichloromethane gives the tetrasilyloxy compound (XXIX), which is stepwise desilylated first with K2CO3 in methanol to yield the carboxylic acid (XXX).
| 【1】 Nicolaou, K.C.; et al.; Total syntheses of epothilones A and B via a macrolactonization-based strategy. J Am Chem Soc 1997, 119, 34, 7974. |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (VI) | 43166 | (3S)-3-[[tert-butyl(dimethyl)silyl]oxy]-4,4-dimethyl-5-oxoheptanoic acid | C15H30O4Si | 详情 | 详情 | |
| (XVI) | 44459 | [(3S,4E)-3-[[tert-butyl(dimethyl)silyl]oxy]-4-methyl-5-(2-methyl-1,3-thiazol-4-yl)-4-pentenyl](triphenyl)phosphonium iodide | C34H43INOPSSi | 详情 | 详情 | |
| (XVII) | 44460 | N-[(2R)-2-methoxypyrrolidinyl]-N-[(E)propylidene]amine; (2R)-2-methoxy-N-[(E)propylidene]-1-pyrrolidinamine | C8H16N2O | 详情 | 详情 | |
| (XVIII) | 44461 | benzyl 4-iodobutyl ether; 1-[(4-iodobutoxy)methyl]benzene | C11H15IO | 详情 | 详情 | |
| (XIX) | 44462 | N-[(E,2S)-6-(benzyloxy)-2-methylhexylidene]-N-[(2R)-2-methoxypyrrolidinyl]amine; (2R)-N-[(E,2S)-6-(benzyloxy)-2-methylhexylidene]-2-methoxy-1-pyrrolidinamine | C19H30N2O2 | 详情 | 详情 | |
| (XX) | 44463 | (2S)-6-(benzyloxy)-2-methylhexanal | C14H20O2 | 详情 | 详情 | |
| (XXI) | 44464 | (2S)-6-(benzyloxy)-2-methyl-1-hexanol | C14H22O2 | 详情 | 详情 | |
| (XXII) | 44465 | benzyl (5S)-6-[[tert-butyl(dimethyl)silyl]oxy]-5-methylhexyl ether; [[(2S)-6-(benzyloxy)-2-methylhexyl]oxy](tert-butyl)dimethylsilane | C20H36O2Si | 详情 | 详情 | |
| (XXIII) | 44466 | (5S)-6-[[tert-butyl(dimethyl)silyl]oxy]-5-methyl-1-hexanol | C13H30O2Si | 详情 | 详情 | |
| (XXIV) | 43163 | (5S)-6-[[tert-butyl(dimethyl)silyl]oxy]-5-methylhexanal | C13H28O2Si | 详情 | 详情 | |
| (XXV) | 46120 | (6S)-7-[[tert-butyl(dimethyl)silyl]oxy]-6-methyl-2-heptanol | C14H32O2Si | 详情 | 详情 | |
| (XXVI) | 46121 | (6S)-7-[[tert-butyl(dimethyl)silyl]oxy]-6-methyl-2-heptanone | C14H30O2Si | 详情 | 详情 | |
| (XXVII) | 40827 | tert-butyl(dimethyl)silyl (1S,3Z,8S)-9-[[tert-butyl(dimethyl)silyl]oxy]-4,8-dimethyl-1-[(E)-1-methyl-2-(2-methyl-1,3-thiazol-4-yl)ethenyl]-3-nonenyl ether; 4-((1E,3S,5Z,10S)-3,11-bis[[tert-butyl(dimethyl)silyl]oxy]-2,6,10-trimethyl-1,5-undecadienyl)-2-methyl-1,3-thiazole | C30H57NO2SSi2 | 详情 | 详情 | |
| (XXVIII) | 40828 | (2S,6Z,9S,10E)-9-[[tert-butyl(dimethyl)silyl]oxy]-2,6,10-trimethyl-11-(2-methyl-1,3-thiazol-4-yl)-6,10-undecadien-1-ol | C24H43NO2SSi | 详情 | 详情 | |
| (XXIX) | 40829 | (2S,6Z,9S,10E)-9-[[tert-butyl(dimethyl)silyl]oxy]-2,6,10-trimethyl-11-(2-methyl-1,3-thiazol-4-yl)-6,10-undecadienal | C24H41NO2SSi | 详情 | 详情 | |
| (XXX) | 46118 | (3S,6R,7S,8S,12Z,15S,16E)-3,15-bis[[tert-butyl(dimethyl)silyl]oxy]-7-hydroxy-4,4,6,8,12,16-hexamethyl-17-(2-methyl-1,3-thiazol-4-yl)-5-oxo-12,16-heptadecadienoic acid | C39H71NO6SSi2 | 详情 | 详情 |
合成路线4
该中间体在本合成路线中的序号：(XVIII)Assembly of the final product: The condensation of SAMP hydrazone (XVII) with 4-(benzyloxy)butyl iodide (XVIII) by means of LDA in THF gives the chiral 2-methylhexanal hydrazone (XIX), which is ozonolyzed in dichloromethane, yielding the free aldehyde (XX). The reduction of (XX) with NaBH4 in methanol affords the corresponding alcohol (XXI), which is protected with Tbdms-Cl and TEA in dichloromethane, providing the silyl ether (XXII). The hydrogenolysis of (XXII) with H2 over Pd/C in THF furnishes the alcohol (XXIII), which is oxidized to the aldehyde (XXIV) with oxalyl chloride, DMSO and TEA in dichloromethane. The condensation of aldehyde (XXIV) with the intermediate phosphonium salt (XVI) by means of NaHMDS in THF gives the silylated diol (XXV), which is selectively monodesilylated with CSA in dichloromethane/methanol to yield the primary alcohol (XXVI). The oxidation of (XXVI) with SO3/pyridine, DMSO and TEA in dichloromethane affords the corresponding aldehyde (XXVII), which is condensed with the oxoacid intermediate (VI) by means of LDA in THF to provide the linear heptadecadienoic acid (XXVIII) as a diastereomeric mixture.
| 【1】 Nicolaou, K.C.; et al.; Total syntheses of epothilones A and B via a macrolactonization-based strategy. J Am Chem Soc 1997, 119, 34, 7974. |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (VI) | 43166 | (3S)-3-[[tert-butyl(dimethyl)silyl]oxy]-4,4-dimethyl-5-oxoheptanoic acid | C15H30O4Si | 详情 | 详情 | |
| (XVI) | 44459 | [(3S,4E)-3-[[tert-butyl(dimethyl)silyl]oxy]-4-methyl-5-(2-methyl-1,3-thiazol-4-yl)-4-pentenyl](triphenyl)phosphonium iodide | C34H43INOPSSi | 详情 | 详情 | |
| (XVII) | 44460 | N-[(2R)-2-methoxypyrrolidinyl]-N-[(E)propylidene]amine; (2R)-2-methoxy-N-[(E)propylidene]-1-pyrrolidinamine | C8H16N2O | 详情 | 详情 | |
| (XVIII) | 44461 | benzyl 4-iodobutyl ether; 1-[(4-iodobutoxy)methyl]benzene | C11H15IO | 详情 | 详情 | |
| (XIX) | 44462 | N-[(E,2S)-6-(benzyloxy)-2-methylhexylidene]-N-[(2R)-2-methoxypyrrolidinyl]amine; (2R)-N-[(E,2S)-6-(benzyloxy)-2-methylhexylidene]-2-methoxy-1-pyrrolidinamine | C19H30N2O2 | 详情 | 详情 | |
| (XX) | 44463 | (2S)-6-(benzyloxy)-2-methylhexanal | C14H20O2 | 详情 | 详情 | |
| (XXI) | 44464 | (2S)-6-(benzyloxy)-2-methyl-1-hexanol | C14H22O2 | 详情 | 详情 | |
| (XXII) | 44465 | benzyl (5S)-6-[[tert-butyl(dimethyl)silyl]oxy]-5-methylhexyl ether; [[(2S)-6-(benzyloxy)-2-methylhexyl]oxy](tert-butyl)dimethylsilane | C20H36O2Si | 详情 | 详情 | |
| (XXIII) | 44466 | (5S)-6-[[tert-butyl(dimethyl)silyl]oxy]-5-methyl-1-hexanol | C13H30O2Si | 详情 | 详情 | |
| (XXIV) | 43163 | (5S)-6-[[tert-butyl(dimethyl)silyl]oxy]-5-methylhexanal | C13H28O2Si | 详情 | 详情 | |
| (XXV) | 44467 | 4-((1E,3S,5Z,10S)-3,11-bis[[tert-butyl(dimethyl)silyl]oxy]-2,10-dimethyl-1,5-undecadienyl)-2-methyl-1,3-thiazole; tert-butyl(dimethyl)silyl (2S,6Z,9S,10E)-9-[[tert-butyl(dimethyl)silyl]oxy]-2,10-dimethyl-11-(2-methyl-1,3-thiazol-4-yl)-6,10-undecadienyl ether | C29H55NO2SSi2 | 详情 | 详情 | |
| (XXVI) | 44468 | (2S,6Z,9S,10E)-9-[[tert-butyl(dimethyl)silyl]oxy]-2,10-dimethyl-11-(2-methyl-1,3-thiazol-4-yl)-6,10-undecadien-1-ol | C23H41NO2SSi | 详情 | 详情 | |
| (XXVII) | 44469 | (2S,6Z,9S,10E)-9-[[tert-butyl(dimethyl)silyl]oxy]-2,10-dimethyl-11-(2-methyl-1,3-thiazol-4-yl)-6,10-undecadienal | C23H39NO2SSi | 详情 | 详情 | |
| (XXVIII) | 44470 | (3S,6R,7S,8S,12Z,15S,16E)-3,15-bis[[tert-butyl(dimethyl)silyl]oxy]-7-hydroxy-4,4,6,8,16-pentamethyl-17-(2-methyl-1,3-thiazol-4-yl)-5-oxo-12,16-heptadecadienoic acid | C38H69NO6SSi2 | 详情 | 详情 |