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【结 构 式】

【分子编号】20836

【品名】[(4S)-4-amino-6-fluoro-3,4-dihydro-2H-chromen-4-yl]methyl formate

【CA登记号】

【 分 子 式 】C11H12FNO3

【 分 子 量 】225.2196232

【元素组成】C 58.66% H 5.37% F 8.44% N 6.22% O 21.31%

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:(IX)

The condensation of 4-fluorophenol (I) with 1,2-dibromoethane (II) in basic medium gives 2-(4-fluorophenyl)ethyl bromide (III), which by reaction with N-benzoyl-2-hydroxyglycine (IV) in methanesulfonic acid yields N-benzoyl-2-[2-(2-bromoethoxy)-5-fluorophenyl]glycine (V). The cyclization of (V) with acetic anhydride and triethylamine at 50 C affords 6-fluoro-2'-phenylspiro[2,3-dihydro-4H-1-benzopyran-4,4'-oxazolidine]-5'-one (VI), which is hydrolyzed with refluxing formic acid-HCl giving the amino acid (VII). The esterification of (VII) with SOCl2 and methanol in the usual way yields the methyl ester (VIII), which is submitted to optical resolution by selective hydrolysis with alpha-chymotrypsine affording methyl 4(S)-amino-6-fluoro-2,3-dihydro-4H-1-benzopyrano-4-carboxylate (IX). Finally, this compound is converted into sorbinil by cyclization with sodium cyanate in acetic acid at room temperature.

1 Dirlam, N.L.; Moore, B.S.; Urban, F.J.; Novel synthesis of the aldose reductase inhibitor sorbinil via amidoalkylation, intramolecular oxazolidin-5-one alkylation, and chymotrypsin resolution. J Org Chem 1987, 52, 16, 3587-91.
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) 19369 2-iodopropane 75-30-9 C3H7I 详情 详情
(II) 10252 1,2-Dibromoethane; Ethylene dibromide 106-93-4 C2H4Br2 详情 详情
(III) 20830 1-(2-bromoethoxy)-4-fluorobenzene; 2-bromoethyl 4-fluorophenyl ether 332-48-9 C8H8BrFO 详情 详情
(IV) 20606 2-(benzoylamino)-2-hydroxyacetic acid 16555-77-4 C9H9NO4 详情 详情
(V) 20832 2-(benzoylamino)-2-[2-(2-bromoethoxy)-5-fluorophenyl]acetic acid C17H15BrFNO4 详情 详情
(VI) 20833 6-Fluoro-2'-phenyl-3,4,4',5'-tetrahydro-2H-spiro[1-benzopyran-4,4'-oxazol]-5'-one C17H12FNO3 详情 详情
(VII) 20834 4-amino-6-fluoro-4-chromanecarboxylic acid C10H10FNO3 详情 详情
(VIII) 20835 methyl 4-amino-6-fluoro-4-chromanecarboxylate C11H12FNO3 详情 详情
(IX) 20836 [(4S)-4-amino-6-fluoro-3,4-dihydro-2H-chromen-4-yl]methyl formate C11H12FNO3 详情 详情
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