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【结 构 式】

【分子编号】56568

【品名】2-(dipropylamino)-5,6-dimethoxy-1-indanol

【CA登记号】

【 分 子 式 】C17H27NO3

【 分 子 量 】293.40632

【元素组成】C 69.59% H 9.28% N 4.77% O 16.36%

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)

Knoevenagel condensation of 3,4-dimethoxybenzaldehyde (I) with malonic acid produced the cinnamic acid (II), which was further reduced to (III) by catalytic hydrogenation using Pd/C. Conversion of (III) to the corresponding acid chloride (IV), followed by Friedel-Crafts intramolecular cyclization gave the indanone (V). Nitrosation of (V) yielded the oximino derivative (VI), which was subsequently silylated with t-butyldimethylsilyl chloride and imidazole to afford the O-silyl oxime (VII). Reduction of (VII) with borane-dimethyl sulfide complex produced the amino alcohol (VIII). Without isolation, (VIII) was converted to the dipropylamino compound (IX) by reductive alkylation with propionaldehyde and NaBH(OAc)3. Amino alcohol (IX) was finally deoxygenated by means of triethylsilane in the presence of boron trifluoride etherate.

1 Haadsma-Svensson, S.R.; Cleek, K.A.; Dinh, D.M.; et al.; Dopamine D3 receptor antagonists. 1. Synthesis and structure-activity relationships of 5,6-dimethoxy-N-alkyl- and N-alkylaryl-substituted 2-aminoindans. J Med Chem 2001, 44, 26, 4716.
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) 18304 3,4-Dimethoxybenzaldehyde; Veratraldehyde 120-14-9 C9H10O3 详情 详情
(II) 28568 (E)-3-(3,4-dimethoxyphenyl)-2-propenoic acid 2316-26-9 C11H12O4 详情 详情
(III) 40182 3-(3,4-dimethoxyphenyl)propionic acid 2107-70-2 C11H14O4 详情 详情
(IV) 56565 3-(3,4-dimethoxyphenyl)propanoyl chloride C11H13ClO3 详情 详情
(V) 13430 5,6-Dimethoxy-1-indanone; 2,3-Dihydro-5,6-dimethoxy-1H-inden-1-one 2107-69-9 C11H12O3 详情 详情
(VI) 27302 5,6-dimethoxy-1H-indene-1,2(3H)-dione 2-oxime C11H11NO4 详情 详情
(VII) 56566 5,6-dimethoxy-1H-indene-1,2(3H)-dione 2-{O-[tert-butyl(dimethyl)silyl]oxime} C17H25NO4Si 详情 详情
(VIII) 56567 2-amino-5,6-dimethoxy-1-indanol C11H15NO3 详情 详情
(IX) 56568 2-(dipropylamino)-5,6-dimethoxy-1-indanol C17H27NO3 详情 详情
Extended Information