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【结 构 式】

【分子编号】51233

【品名】(2S)-3-(4-hydroxyphenyl)-4-methyl-2-[4-[2-(1-piperidinyl)ethoxy]phenyl]-2H-chromen-7-ol

【CA登记号】

【 分 子 式 】C29H31NO4

【 分 子 量 】457.56948

【元素组成】C 76.12% H 6.83% N 3.06% O 13.99%

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:(XI)

Friedel-Crafts reaction between 4-hydroxyphenylacetic acid (I) and resorcinol (II) by means of BF3.Et2O provides trihydroxydeoxy benzoin (III), which is then protected with dihydropyran (IV) in the presence of TsOH to give the bis-THP ether (V). Knoevenagel reaction of (V) with 4-hydroxybenzaldehyde (VI) in the presence of piperidine in refluxing benzene, followed by alkylation with 1-(2-chloroethyl)piperidine (VII) in the presence of Cs2CO3 in refluxing acetone:H2O to yield chromanone (VIII). Alternatively, (VIII) can be synthesized by reaction of (V) with compound (IX) (obtained in turn from reaction between aldehyde (VI) and chloro derivative (VII) with K2CO3 in DMF) by means of piperidine in refluxing toluene, followed by treatment with NaOAc in refluxing MeOH. Chromanone (VIII) is then alkylated either with MeLi or with methylmagnesium bromide in THF and then dehydrated and deprotected in HOAc furnishing chromene (X). Racemic compound (X) is then resolved to afford enantiomer (XI) either by preparative chiral HPLC or by chemical resolution of the corresponding diastereomeric salt obtained by reaction with (+)-CSA in DMF/CH2Cl2, and treatment of the resulting salt with saturated K2CO3 . Finally, the target product is obtained by acylation of (XI) by reaction with pivaloyl chloride (XII) and Et3N in CH2Cl2.

1 Caron, B.; Cloutier, J.; Gauthier, S.; (S)-(+)-4-[7-(2, 2-Dimethyl-1-oxopropoxy)-4-methyl-2-[4-[2-(1-piperidinyl)ethoxy]phenyl]-2H-1-benzopyran-3-yl]phenyl 2, 2-dimethylpropanoate (EM-800): A highly potent, specific, and orally active nonsteroidal antiestrogen. J Med Chem 1997, 40, 14, 2117.
2 Labrie, F.; Merand, Y.; Gauthier, S. (Endorecherche Inc.); Benzopyran-containing cpds. and method for their use. EP 0811006; EP 1167364; JP 1999500133; WO 9626201 .
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) 18430 2-(4-Hydroxyphenyl)acetic acid; 4-Hydroxyphenylacetic acid 156-38-7 C8H8O3 详情 详情
(II) 10361 1,3-Dihydroxybenzene; m-Dihydroxybenzene; Resorcinol; Resorcin; 1,3-Benzenediol 108-46-3 C6H6O2 详情 详情
(III) 51229 1-(2,4-dihydroxyphenyl)-2-(4-hydroxyphenyl)-1-ethanone C14H12O4 详情 详情
(IV) 13684 3,4-Dihydro-2H-pyran;2,3-Dihydro-4H-pyran; 5,6-Dihydro-4H-pyran;Dihydropyran 110-87-2 C5H8O 详情 详情
(V) 51230 1-[2-hydroxy-4-(tetrahydro-2H-pyran-2-yloxy)phenyl]-2-[4-(tetrahydro-2H-pyran-2-yloxy)phenyl]-1-ethanone C24H28O6 详情 详情
(VI) 13433 4-Hydroxybenzaldehyde; p-Hydroxybenzaldehyde 123-08-0 C7H6O2 详情 详情
(VII) 10117 1-(2-Chloroethyl)piperidine; N-(2-Chloroethyl)piperidine 1932-03-2 C7H14ClN 详情 详情
(VIII) 51231 2-[4-[2-(1-piperidinyl)ethoxy]phenyl]-7-(tetrahydro-2H-pyran-2-yloxy)-3-[4-(tetrahydro-2H-pyran-2-yloxy)phenyl]-2,3-dihydro-4H-chromen-4-one C38H45NO7 详情 详情
(IX) 35795 4-[2-(1-piperidinyl)ethoxy]benzaldehyde 26815-04-3 C14H19NO2 详情 详情
(X) 51232 3-(4-hydroxyphenyl)-4-methyl-2-[4-[2-(1-piperidinyl)ethoxy]phenyl]-2H-chromen-7-ol C29H31NO4 详情 详情
(XI) 51233 (2S)-3-(4-hydroxyphenyl)-4-methyl-2-[4-[2-(1-piperidinyl)ethoxy]phenyl]-2H-chromen-7-ol C29H31NO4 详情 详情
(XII) 13597 2,2-Dimethylpropanoyl chloride; Pivaloyl chloride 3282-30-2 C5H9ClO 详情 详情
Extended Information