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【结 构 式】

【分子编号】63323

【品名】trimethyl(phenyl)stannane

【CA登记号】

【 分 子 式 】C9H14Sn

【 分 子 量 】240.92016

【元素组成】C 44.87% H 5.86% Sn 49.27%

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:

Ethoxycarbonylpiperidone (I) was converted into enol triflate (II), and this was coupled with either phenylboronic acid or phenyl trimethylstannane using Pd catalysts to give 4-phenyltetrahydro-pyridine (III). Subsequent double bond hydrogenation produced a racemic mixture of cis piperidines (IV) and (V), from which several routes were used to synthesize the chiral title compounds. Removal of BOC protecting groups with HCl in EtOAc gave racemic (VI), which was alkylated with bromide (VII) in the presence of diisopropylethylamine to afford racemic (VIII). The enantiomers of (VIII) were separated utilizing chiral HPLC on a Chiralcel OD column, yielding the (-)(S,S) compound (XV, 247751) and the (+)(R,R) compound (XIV, 247752). Alternatively, racemic piperidine (VI) could be separated using a Chiralcel OD column into enantiomers (-)(S,S) (IX) and (+)(R,R) (X), which were separately alkylated with bromide (VII) to furnish (XV) and (XIV), respectively. Resolution of the racemic mixture (IV) and (V) was also achieved by hydrolysis to the racemic acids (XI) with LiOH under controlled conditions, followed by treatment with (S)-a-methylbenzylamine (XII) and crystallization of the resulting salt (XIII), whose absolute configuration was determined by X-ray diffraction. Liberation of the (S,S) acid, followed by BOC removal and esterification with an ethanolic solution of HCl then provided ester (IX), which could be alkylated with bromide (VII) to afford (XV).

1 Patane, M.A.; DiPardo, R.M.; Price, R.P.; Chang, R.S.; Ransom, R.W.; O'Malley, S.S.; Di Salvo, J.; Bock, M.G.; Selective alpha-1a adrenergic receptor antagonists. Effects of pharmacophore regio- and stereochemistry on potency and selectivity. Bioorg Med Chem Lett 1998, 8, 18, 2495.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
16593 Phenylboronic acid;Benzeneboronic acid;Phenylboron dihydroxide 98-80-6 C6H7BO2 详情 详情
63323 trimethyl(phenyl)stannane C9H14Sn 详情 详情
(I) 18394 1-(tert-butyl) 3-ethyl 4-oxo-1,3-piperidinedicarboxylate C13H21NO5 详情 详情
(II) 18395 1-(tert-butyl) 3-ethyl 4-[[(trifluoromethyl)sulfonyl]oxy]-5,6-dihydro-1,3(2H)-pyridinedicarboxylate C14H20F3NO7S 详情 详情
(III) 18396 1-(tert-butyl) 3-ethyl 4-phenyl-5,6-dihydro-1,3(2H)-pyridinedicarboxylate C19H25NO4 详情 详情
(IV) 18397 1-(tert-butyl) 3-ethyl (3S,4S)-4-phenyl-1,3-piperidinedicarboxylate C19H27NO4 详情 详情
(V) 18398 1-(tert-butyl) 3-ethyl (3R,4R)-4-phenyl-1,3-piperidinedicarboxylate C19H27NO4 详情 详情
(VI) 18399 ethyl 4-phenyl-3-piperidinecarboxylate C14H19NO2 详情 详情
(VII) 18400 2-(4-bromobutyl)-5-chloro-1H-1,2-benzisothiazole-1,1,3(2H)-trione C11H11BrClNO3S 详情 详情
(VIII) 18401 ethyl 1-[4-(5-chloro-1,1,3-trioxo-1,3-dihydro-2H-1,2-benzisothiazol-2-yl)butyl]-4-phenyl-3-piperidinecarboxylate C25H29ClN2O5S 详情 详情
(IX) 18402 ethyl (3S,4S)-4-phenyl-3-piperidinecarboxylate C14H19NO2 详情 详情
(X) 18403 ethyl (3R,4R)-4-phenyl-3-piperidinecarboxylate C14H19NO2 详情 详情
(XI) 18404 1-(tert-butoxycarbonyl)-4-phenyl-3-piperidinecarboxylic acid C17H23NO4 详情 详情
(XII) 10039 (1R)-1-Phenylethylamine; (1R)-1-Phenyl-1-ethanamine.; L-alpha-Phenylethylamine 3886-69-9 C8H11N 详情 详情
(XIII) 18406 (1S)-1-phenyl-1-ethanaminium C8H12N 详情 详情
(XIV) 18407 ethyl (3R,4R)-1-[4-(5-chloro-1,1,3-trioxo-1,3-dihydro-2H-1,2-benzisothiazol-2-yl)butyl]-4-phenyl-3-piperidinecarboxylate C25H29ClN2O5S 详情 详情
(XV) 18408 ethyl (3S,4S)-1-[4-(5-chloro-1,1,3-trioxo-1,3-dihydro-2H-1,2-benzisothiazol-2-yl)butyl]-4-phenyl-3-piperidinecarboxylate C25H29ClN2O5S 详情 详情
Extended Information