【结 构 式】 |
【分子编号】54466 【品名】[4-({[tert-butyl(diphenyl)silyl]oxy}methyl)phenyl](3-pyridinyl)methanone 【CA登记号】 |
【 分 子 式 】C29H29NO2Si 【 分 子 量 】451.6403 【元素组成】C 77.12% H 6.47% N 3.1% O 7.09% Si 6.22% |
合成路线1
该中间体在本合成路线中的序号:(I)The Wittig condensation of 1-[4-(tert-butyldiphenylsilyloxymethyl)phenyl]-1-(3-pyridyl)methanone (I) with phosphonium bromide (II) by means of NaH in tert-butanol gives the heptenoic ester (III), which is desilylated with TBAF in THF to yield 7-[4-(hydroxymethyl)phenyl]-7-(3-pyridyl)-6-heptenoic acid ethyl ester (IV). The reaction of (IV) with Ms-Cl and TEA affords the corresponding mesylate (V), which is finally condensed with the triazolodiazepine (VI) by means of K2CO3 and 18-crown-6 in DMF.
【1】 Fujita, M.; et al.; Novel agents combining platelet activating factor (PAF) receptor antagonist with thromboxane synthase inhibitor (TxSI). Bioorg Med Chem Lett 2002, 12, 5, 771. |
【2】 Sano, T.; Seki, T.; Fujita, M.; Inada, H. (Nikken Chemicals Co., Ltd.); Triazolo-1,4-diazepine cpds. and medicinal compsn. containing the same. EP 0995752; JP 1999071378; US 6433167; WO 9858930 . |
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) | 54466 | [4-({[tert-butyl(diphenyl)silyl]oxy}methyl)phenyl](3-pyridinyl)methanone | C29H29NO2Si | 详情 | 详情 | |
(II) | 54467 | (6-ethoxy-6-oxohexyl)(triphenyl)phosphonium bromide | C26H30BrO2P | 详情 | 详情 | |
(III) | 54468 | ethyl (E)-7-[4-({[tert-butyl(diphenyl)silyl]oxy}methyl)phenyl]-7-(3-pyridinyl)-6-heptenoate | C37H43NO3Si | 详情 | 详情 | |
(IV) | 54469 | ethyl (E)-7-[4-(hydroxymethyl)phenyl]-7-(3-pyridinyl)-6-heptenoate | C21H25NO3 | 详情 | 详情 | |
(V) | 54470 | ethyl (E)-7-(4-{[(methylsulfonyl)oxy]methyl}phenyl)-7-(3-pyridinyl)-6-heptenoate | C22H27NO5S | 详情 | 详情 | |
(VI) | 14057 | 6-(2-Chlorophenyl)-1,4-dimethyl-7,8,9,10-tetrahydro-4H-pyrido[4',3':4,5]thieno[3,2-f][1,2,4]triazolo[4,3-a][1,4]diazepine | C19H18ClN5S | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号:(I)Treatment of 4-(t-butyldiphenylsilyloxymethyl)phenyl-(3-pyridyl)ketone (I) with hydroxylamine hydrochloride in pyridine affords oxime (II) as a mixture of geometric isomers. Then, alkylation of oxime (II) with ethyl 5-bromovalerate (III) in the presence of NaH provides ester (IV). After desilylation of (IV) with tetrabutylammonium fluoride, the deprotected primary alcohol (V) is oxidized by KMnO4 to furnish carboxylic acid (VI). Finally, DCC-mediated coupling of acid (VI) with the known tetracyclic precursor (VII) gives rise to the corresponding amide.
【1】 Sano, T.; Seki, T.; Fujita, M.; Inada, H. (Nikken Chemicals Co., Ltd.); Triazolo-1,4-diazepine cpds. and medicinal compsn. containing the same. EP 0995752; JP 1999071378; US 6433167; WO 9858930 . |
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) | 54466 | [4-({[tert-butyl(diphenyl)silyl]oxy}methyl)phenyl](3-pyridinyl)methanone | C29H29NO2Si | 详情 | 详情 | |
(II) | 61007 | [4-({[tert-butyl(diphenyl)silyl]oxy}methyl)phenyl](3-pyridinyl)methanone oxime | C29H30N2O2Si | 详情 | 详情 | |
(III) | 37151 | ethyl 5-bromopentanoate | 14660-52-7 | C7H13BrO2 | 详情 | 详情 |
(IV) | 61008 | ethyl 5-({[(E)-[4-({[tert-butyl(diphenyl)silyl]oxy}methyl)phenyl](3-pyridinyl)methylidene]amino}oxy)pentanoate | C36H42N2O4Si | 详情 | 详情 | |
(V) | 61009 | ethyl 5-({[(E)-[4-(hydroxymethyl)phenyl](3-pyridinyl)methylidene]amino}oxy)pentanoate | C20H24N2O4 | 详情 | 详情 | |
(VI) | 61010 | 4-[{[(5-ethoxy-5-oxopentyl)oxy]imino}(3-pyridinyl)methyl]benzoic acid | C20H22N2O5 | 详情 | 详情 | |
(VII) | 14057 | 6-(2-Chlorophenyl)-1,4-dimethyl-7,8,9,10-tetrahydro-4H-pyrido[4',3':4,5]thieno[3,2-f][1,2,4]triazolo[4,3-a][1,4]diazepine | C19H18ClN5S | 详情 | 详情 |