【结 构 式】 |
【分子编号】17381 【品名】5-((1R,3S,4R,5S,7S,9E)-4-[[tert-butyl(dimethyl)silyl]oxy]-10-[4-((1R,2S,3E)-4-((1R,3R,4R)-4-[[tert-butyl(diphenyl)silyl]oxy]-3-methoxycyclohexyl)-1,3-dimethyl-2-[[(2S)piperidinylcarbonyl]oxy]-3-butenyl)-9-[(4-methoxybenzyl)oxy]-2,2-dimethyl-1,3,7-trioxaspiro[5.5]undec-11-yl]-3,5-dimethoxy-1,7,9-trimethyl-9-decenyl)-2,2-dimethyl-1,3-dioxole-4-carboxylic acid 【CA登记号】 |
【 分 子 式 】C80H123NO16Si2 【 分 子 量 】1411.02476 【元素组成】C 68.1% H 8.79% N 0.99% O 18.14% Si 3.98% |
合成路线1
该中间体在本合成路线中的序号:(XIII)The diastereoselective reduction of (VII) with NaBH4/CeCl3 in methanol/ethyl ether affords alcohol (VIII), which was methylated with trimethyloxonium tetrafluoroborate in dichloromethane giving the methyl ether (IX). The treatment of (IX) with lithium bis(trimethylsilyl)amide (Li-HMDS) and Mg(HMDS)2 causes enolization and ring opening affording alcohol (X), which was protected with tert-butyldimethylsilyl triflate yielding the fully silylated compound (XI). The hydrolysis of the ester group of (XI) with NaOH, followed by a selective elimination of the triethylsilyl group with trifluoroacetic acid and esterification of the resulting alcohol with piperidine-2(S)-carboxylic acid (XII) by means of dicyclohexylcarbodiimide (DCC) and dimethylaminopyridine (DMAP) afforded ester (XIII).
【1】 Liu, L.B.; Roper, T.D.; Gleason, J.L.; Ireland, R.E.; Total synthesis of FK-506. 2. Completion of the synthesis. Tetrahedron 1997, 53, 39, 13257. |
【2】 Liu, L.B.; Roper, T.D.; Ireland, R.E.; Total synthesis of FK-506. 1. Construction of the C16-C34 fragment. Tetrahedron 1997, 53, 39, 13221. |
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) | 17375 | ethyl (4R,5S,7S,8S,10R)-7-((3S,5E)-6-[4-[(1R,2S,3E)-4-((1R,3R,4R)-4-[[tert-butyl(diphenyl)silyl]oxy]-3-methoxycyclohexyl)-1,3-dimethyl-2-[(triethylsilyl)oxy]-3-butenyl]-9-[(4-methoxybenzyl)oxy]-2,2-dimethyl-1,3,7-trioxaspiro[5.5]undec-11-yl]-3,5-dimethyl-5-hexenoyl)-8-methoxy-2,2,10-trimethyl-1,3,6-trioxaspiro[4.5]decane-4-carboxylate | C75H114O15Si2 | 详情 | 详情 | |
(VIII) | 17376 | ethyl (4R,5S,7R,8S,10R)-7-((1S,3S,5E)-6-[4-[(1R,2S,3E)-4-((1R,3R,4R)-4-[[tert-butyl(diphenyl)silyl]oxy]-3-methoxycyclohexyl)-1,3-dimethyl-2-[(triethylsilyl)oxy]-3-butenyl]-9-[(4-methoxybenzyl)oxy]-2,2-dimethyl-1,3,7-trioxaspiro[5.5]undec-11-yl]-1-hydroxy-3,5-dimethyl-5-hexenyl)-8-methoxy-2,2,10-trimethyl-1,3,6-trioxaspiro[4.5]decane-4-carboxylate | C75H116O15Si2 | 详情 | 详情 | |
(IX) | 17377 | ethyl (4R,5S,7R,8S,10R)-7-((1S,3S,5E)-6-[4-[(1R,2S,3E)-4-((1R,3R,4R)-4-[[tert-butyl(diphenyl)silyl]oxy]-3-methoxycyclohexyl)-1,3-dimethyl-2-[(triethylsilyl)oxy]-3-butenyl]-9-[(4-methoxybenzyl)oxy]-2,2-dimethyl-1,3,7-trioxaspiro[5.5]undec-11-yl]-1-methoxy-3,5-dimethyl-5-hexenyl)-8-methoxy-2,2,10-trimethyl-1,3,6-trioxaspiro[4.5]decane-4-carboxylate | C76H118O15Si2 | 详情 | 详情 | |
(X) | 17378 | ethyl 5-((1R,3S,4R,5S,7S,9E)-10-[4-[(1R,2S,3E)-4-((1R,3R,4R)-4-[[tert-butyl(diphenyl)silyl]oxy]-3-methoxycyclohexyl)-1,3-dimethyl-2-[(triethylsilyl)oxy]-3-butenyl]-9-[(4-methoxybenzyl)oxy]-2,2-dimethyl-1,3,7-trioxaspiro[5.5]undec-11-yl]-4-hydroxy-3,5-dimethoxy-1,7,9-trimethyl-9-decenyl)-2,2-dimethyl-1,3-dioxole-4-carboxylate | C76H118O15Si2 | 详情 | 详情 | |
(XI) | 17379 | ethyl 5-((1R,3S,4R,5S,7S,9E)-4-[[tert-butyl(dimethyl)silyl]oxy]-10-[4-[(1R,2S,3E)-4-((1R,3R,4R)-4-[[tert-butyl(diphenyl)silyl]oxy]-3-methoxycyclohexyl)-1,3-dimethyl-2-[(triethylsilyl)oxy]-3-butenyl]-9-[(4-methoxybenzyl)oxy]-2,2-dimethyl-1,3,7-trioxaspiro[5.5]undec-11-yl]-3,5-dimethoxy-1,7,9-trimethyl-9-decenyl)-2,2-dimethyl-1,3-dioxole-4-carboxylate | C82H132O15Si3 | 详情 | 详情 | |
(XII) | 17380 | (2S)hexahydro-2-pyridinecarboxylic acid; (S)-pipecolic acid | 3105-95-1 | C6H11NO2 | 详情 | 详情 |
(XIII) | 17381 | 5-((1R,3S,4R,5S,7S,9E)-4-[[tert-butyl(dimethyl)silyl]oxy]-10-[4-((1R,2S,3E)-4-((1R,3R,4R)-4-[[tert-butyl(diphenyl)silyl]oxy]-3-methoxycyclohexyl)-1,3-dimethyl-2-[[(2S)piperidinylcarbonyl]oxy]-3-butenyl)-9-[(4-methoxybenzyl)oxy]-2,2-dimethyl-1,3,7-trioxaspiro[5.5]undec-11-yl]-3,5-dimethoxy-1,7,9-trimethyl-9-decenyl)-2,2-dimethyl-1,3-dioxole-4-carboxylic acid | C80H123NO16Si2 | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号:(XIII)Ester (XIII) was submitted to cyclization by means of triethylsilyl triflate and 2-chloro-1-methylpyridinium iodide (MCPI) in dichloromethane/methanol gaving the macrocyclic compound (XIV). Elimination of the p-methoxybenzyl group of (XIV) with dichlorodicyanobenzoquinone (DDQ) in dichloromethane yielded the alcohol (XV), which was converted into the iodo derivative (XVI) with I2, triphenylphosphine and imidazole in hot toluene. The reductive fragmentation of the spiroketal rings of (XVI) with zinc/silver-graphite in THF afforded compound (XVII) with the adequate configuration in the C21-C24 fragment.
【1】 Liu, L.B.; Roper, T.D.; Gleason, J.L.; Ireland, R.E.; Total synthesis of FK-506. 2. Completion of the synthesis. Tetrahedron 1997, 53, 39, 13257. |
【2】 Liu, L.B.; Roper, T.D.; Ireland, R.E.; Total synthesis of FK-506. 1. Construction of the C16-C34 fragment. Tetrahedron 1997, 53, 39, 13221. |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(XIII) | 17381 | 5-((1R,3S,4R,5S,7S,9E)-4-[[tert-butyl(dimethyl)silyl]oxy]-10-[4-((1R,2S,3E)-4-((1R,3R,4R)-4-[[tert-butyl(diphenyl)silyl]oxy]-3-methoxycyclohexyl)-1,3-dimethyl-2-[[(2S)piperidinylcarbonyl]oxy]-3-butenyl)-9-[(4-methoxybenzyl)oxy]-2,2-dimethyl-1,3,7-trioxaspiro[5.5]undec-11-yl]-3,5-dimethoxy-1,7,9-trimethyl-9-decenyl)-2,2-dimethyl-1,3-dioxole-4-carboxylic acid | C80H123NO16Si2 | 详情 | 详情 | |
(XIV) | 17382 | (10S,12S,13R,14S,16R,28S,31S,32R)-13-[[tert-butyl(dimethyl)silyl]oxy]-31-[(E)-2-((1R,3R,4R)-4-[[tert-butyl(diphenyl)silyl]oxy]-3-methoxycyclohexyl)-1-methylethenyl]-12,14-dimethoxy-4-[(4-methoxybenzyl)oxy]-8,10,16,19,19,32,35,35-octamethyl-2,18,20,30,34,36-hexaoxa-23-azapentacyclo[31.3.1.0(1,6).0(17,21).0(23,28)]heptatriaconta-7,17(21)-diene-22,29-dione | C80H121NO15Si2 | 详情 | 详情 | |
(XV) | 17383 | (10S,12S,13R,14S,16R,28S,31S,32R)-13-[[tert-butyl(dimethyl)silyl]oxy]-31-[(E)-2-((1R,3R,4R)-4-[[tert-butyl(diphenyl)silyl]oxy]-3-methoxycyclohexyl)-1-methylethenyl]-4-hydroxy-12,14-dimethoxy-8,10,16,19,19,32,35,35-octamethyl-2,18,20,30,34,36-hexaoxa-23-azapentacyclo[31.3.1.0(1,6).0(17,21).0(23,28)]heptatriaconta-7,17(21)-diene-22,29-dione | C72H113NO14Si2 | 详情 | 详情 | |
(XVI) | 17384 | (10S,12S,13R,14S,16R,28S,31S,32R)-13-[[tert-butyl(dimethyl)silyl]oxy]-31-[(E)-2-((1R,3R,4R)-4-[[tert-butyl(diphenyl)silyl]oxy]-3-methoxycyclohexyl)-1-methylethenyl]-4-iodo-12,14-dimethoxy-8,10,16,19,19,32,35,35-octamethyl-2,18,20,30,34,36-hexaoxa-23-azapentacyclo[31.3.1.0(1,6).0(17,21).0(23,28)]heptatriaconta-7,17(21)-diene-22,29-dione | C72H112INO13Si2 | 详情 | 详情 | |
(XVII) | 17385 | (9aS,12S,13R,14S,17R,21S,23S,24R,25S,27R)-17-allyl-24-[[tert-butyl(dimethyl)silyl]oxy]-12-[(E)-2-((1R,3R,4R)-4-[[tert-butyl(diphenyl)silyl]oxy]-3-methoxycyclohexyl)-1-methylethenyl]-14-hydroxy-23,25-dimethoxy-2,2,13,19,21,27-hexamethyl-7,8,9,9a,12,13,14,15,20,21,22,23,24,25,26,27-hexadecahydro-4H-[1,3]dioxolo[4,5-f]pyrido[2,1-c][1,4]oxazacyclotricosine-4,10,16(6H,17H)-trione | C69H107NO12Si2 | 详情 | 详情 |