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【结 构 式】

【分子编号】20715

【品名】3-[(R)-[(2S,5R)-4-allyl-2,5-dimethylpiperazinyl](3-hydroxyphenyl)methyl]benzoic acid

【CA登记号】

【 分 子 式 】C23H28N2O3

【 分 子 量 】380.487

【元素组成】C 72.61% H 7.42% N 7.36% O 12.61%

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:(XXIX)

In an alternative procedure, the silylether of 3-bromophenol (XIX) was converted to the organolithium compound (XXII) and then coupled to 3-bromobenzaldehyde (XXIII) in THF at -78 C. The resulting benzhydrol (XXIV) was treated with SOCl2 to give chloride (XXV), which was subsequently condensed with piperazine (V) in refluxing acetonitrile. The diastereomeric mixture of benzhydryl piperazines (XXVI) was desilylated with tetraethylammonium fluoride, and the major isomer (XXVII) was isolated by recrystallization from acetonitrile. The bromo substituent of (XXVII) was then substituted for a cyano group upon treatment with CuCN in N-methylpyrrolidinone at 170 C. Basic hydrolysis of nitrile (XXVIII) gave acid (XXIX), which was protected as the tert-butyldimethylsilyl ether and further converted to acid chloride (XXX) by reaction with oxalyl chloride and a catalytic amount of DMF. Finally, acid chloride (XXX) was condensed with N-methyl-3-fluoroaniline (XIV), and the silyl protecting group was removed by treatment with tetraethylammonium fluoride in acetonitrile.

1 Chang, K.-J.; Bishop, M.J.; Bubacz, D.G.; McNutt, R.W. Jr. (Glaxo Wellcome plc); Piperazine cpds. used in therapy. EP 0711289; JP 1997501156; WO 9504051 .
2 Chang, K.; Boswell, G.E.; Bubacz, D.G.; Collins, M.A.; Davis, A.O.; McNutt, R.W. (Delta Pharmaceuticals, Inc.); Opioid diarylmethylpiperazines and piperidines. JP 1995503247; US 5658908; US 5681830; WO 9315062 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(V) 20690 (2R,5S)-1-allyl-2,5-dimethylpiperazine C9H18N2 详情 详情
(XIV) 20700 3-fluoro-N-methylaniline; N-(3-fluorophenyl)-N-methylamine C7H8FN 详情 详情
(XIX) 20705 (3-bromophenoxy)(tert-butyl)dimethylsilane; 3-bromophenyl tert-butyl(dimethyl)silyl ether 65423-56-5 C12H19BrOSi 详情 详情
(XXII) 20708 (3-[[tert-butyl(dimethyl)silyl]oxy]phenyl)lithium C12H19LiOSi 详情 详情
(XXIII) 10477 3-Bromobenzaldehyde; m-Bromobenzaldehyde 3132-99-8 C7H5BrO 详情 详情
(XXIV) 20710 (3-bromophenyl)(3-[[tert-butyl(dimethyl)silyl]oxy]phenyl)methanol C19H25BrO2Si 详情 详情
(XXV) 20711 3-[(3-bromophenyl)(chloro)methyl]phenyl tert-butyl(dimethyl)silyl ether; [3-[(3-bromophenyl)(chloro)methyl]phenoxy](tert-butyl)dimethylsilane C19H24BrClOSi 详情 详情
(XXVI) 20712 (2R,5S)-1-allyl-4-[(3-bromophenyl)(3-[[tert-butyl(dimethyl)silyl]oxy]phenyl)methyl]-2,5-dimethylpiperazine; 3-[[(2S,5R)-4-allyl-2,5-dimethylpiperazinyl](3-bromophenyl)methyl]phenyl tert-butyl(dimethyl)silyl ether C28H41BrN2OSi 详情 详情
(XXVII) 20713 3-[(S)-[(2S,5R)-4-allyl-2,5-dimethylpiperazinyl](3-bromophenyl)methyl]phenol C22H27BrN2O 详情 详情
(XXVIII) 20714 3-[(R)-[(2S,5R)-4-allyl-2,5-dimethylpiperazinyl](3-hydroxyphenyl)methyl]benzonitrile C23H27N3O 详情 详情
(XXIX) 20715 3-[(R)-[(2S,5R)-4-allyl-2,5-dimethylpiperazinyl](3-hydroxyphenyl)methyl]benzoic acid C23H28N2O3 详情 详情
(XXX) 20716 3-[(R)-[(2S,5R)-4-allyl-2,5-dimethylpiperazinyl](3-[[tert-butyl(dimethyl)silyl]oxy]phenyl)methyl]benzoyl chloride C29H41ClN2O2Si 详情 详情
Extended Information