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【结 构 式】

【分子编号】50579

【品名】(2S,4S,5S,7S)-N-(4-amino-2,2-dimethyl-4-oxobutyl)-5-azido-4-hydroxy-2-isopropyl-7-[4-methoxy-3-(3-methoxypropoxy)benzyl]-8-methylnonanamide

【CA登记号】

【 分 子 式 】C31H53N5O6

【 分 子 量 】591.79192

【元素组成】C 62.92% H 9.03% N 11.83% O 16.22%

与该中间体有关的原料药合成路线共 2 条

合成路线1

该中间体在本合成路线中的序号:(XXXV)

The reduction of the chiral propionic acid (VII) with NaBH4 in THF gives the primary alcohol (XXIX), which by reaction with SOCl2 and pyridine in CHCl3 yields the chloride (XXX). Condensation of (XXX) with the butyrolactone intermediate (XXVII) by means of Mg and dibromoethane affords the ketonic adduct (XXXI). Reduction of the exocyclic carbonyl group of (XXXI) with NaBH4 in THF/ methanol provides a 3:1 diastereomeric mixture of the desired chiral alcohol (XXXII) and its OH-epimer (XXXIII) that are separated by flash chromatography. Reaction of (XXXII) with MsCl and TEA, followed by treatment with NaN3, affords the azido derivative (XXXIV), which is condensed with 4-amino-3,3-dimethylbutyramide (XIX) by means of 2-hydroxypyridine and TEA to provide the adduct (XXXV). Finally, the azido group of (XXXV) is reduced with H2 over Pd/ in MeOH to yield the target amino alcohol. An extensive study on the stereoselective reduction of the ketonic adduct (XXXI) has been performed. No better diastereoselectivity than 3:1 has been obtained for the synthesis of the chiral alcohol (XXXII). However, excellent diastereoselectivity (97:3) has been obtained for the synthesis of its OH-epimer, alcohol (XXXIII), with K-selectride in THF, which could potentially provide access to the target amino alcohol via a double inversion protocol.

1 Mealy, N.E.; Castañer, R.M.; Silvestre, J.S.; Castañer, J.; Aliskiren Fumarate. Drugs Fut 2001, 26, 12, 1139.
2 Rüeger, H.; Maibaum, J.; Stutz, S.; Spindler, F.; Göschke, R.; A convergent synthesis approach towards CGP60536B, a non-peptide orally potent renin inhibitor, via an enantiomerically pure ketolactone intermediate. Tetrahedron Lett 2000, 41, 51, 10085.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(VII) 28119 (2R)-2-[4-methoxy-3-(3-methoxypropoxy)benzyl]-3-methylbutyric acid C17H26O5 详情 详情
(XIX) 28129 3-amino-2,2-dimethylpropanamide 324763-51-1 C5H12N2O 详情 详情
(XXVIII) 50572 (2S,4S)-4-isopropyl-5-oxotetrahydro-2-furancarbonyl chloride C8H11ClO3 详情 详情
(XXIX) 50573 (2R)-2-[4-methoxy-3-(3-methoxypropoxy)benzyl]-3-methyl-1-butanol C17H28O4 详情 详情
(XXX) 50574 4-[(2R)-2-(chloromethyl)-3-methylbutyl]-1-methoxy-2-(3-methoxypropoxy)benzene; 3-[5-[(2R)-2-(chloromethyl)-3-methylbutyl]-2-methoxyphenoxy]propyl methyl ether 324763-39-5 C17H27ClO3 详情 详情
(XXXI) 50575 (3S,5S)-3-isopropyl-5-[(3S)-3-[4-methoxy-3-(3-methoxypropoxy)benzyl]-4-methylpentanoyl]dihydro-2(3H)-furanone C25H38O6 详情 详情
(XXXII) 50576 (3S,5S)-5-[(1R,3S)-1-hydroxy-3-[4-methoxy-3-(3-methoxypropoxy)benzyl]-4-methylpentyl]-3-isopropyldihydro-2(3H)-furanone C25H40O6 详情 详情
(XXXIII) 50577 (3S,5S)-5-[(1S,3S)-1-hydroxy-3-[4-methoxy-3-(3-methoxypropoxy)benzyl]-4-methylpentyl]-3-isopropyldihydro-2(3H)-furanone C25H40O6 详情 详情
(XXXIV) 50578 (3S,5S)-5-[(1S,3S)-1-azido-3-[4-methoxy-3-(3-methoxypropoxy)benzyl]-4-methylpentyl]-3-isopropyldihydro-2(3H)-furanone C25H39N3O5 详情 详情
(XXXV) 50579 (2S,4S,5S,7S)-N-(4-amino-2,2-dimethyl-4-oxobutyl)-5-azido-4-hydroxy-2-isopropyl-7-[4-methoxy-3-(3-methoxypropoxy)benzyl]-8-methylnonanamide C31H53N5O6 详情 详情

合成路线2

该中间体在本合成路线中的序号:(XVI)

 

1 Rueger H, Stutz S, Goschke R, et al. 2000. A convergent synthesisi approach towards CGP60536B, a nonpeptide orally potent renin inhibitory, via an enantiomerically pure keto lactone intermediate. Tetrahedron Lett, 41(51): 10085~10089
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) 28131 (4S)-4-benzyl-3-(3-methylbutanoyl)-1,3-oxazolidin-2-one C15H19NO3 详情 详情
(II) 50566 (4S)-4-benzyl-3-[(2S)-2-isopropyl-4-pentenoyl]-1,3-oxazolidin-2-one C18H23NO3 详情 详情
(III) 50567 (3S)-5-(hydroxymethyl)-3-isopropyldihydro-2(3H)-furanone C8H14O3 详情 详情
(IV) 50569 (4S)-4-isopropyl-5-oxotetrahydro-2-furancarbonyl chloride C8H11ClO3 详情 详情
(V) 67008 benzyl (2S,4R)-4-isopropyl-5-oxotetrahydro-2-furancarboxylate   C15H18O4 详情 详情
(VI) 50570 benzyl (2S,4S)-4-isopropyl-5-oxotetrahydro-2-furancarboxylate C15H18O4 详情 详情
(VII) 50571 (2S,4S)-4-isopropyl-5-oxotetrahydro-2-furancarboxylic acid C8H12O4 详情 详情
(VIII) 50572 (2S,4S)-4-isopropyl-5-oxotetrahydro-2-furancarbonyl chloride C8H11ClO3 详情 详情
(IX) 28119 (2R)-2-[4-methoxy-3-(3-methoxypropoxy)benzyl]-3-methylbutyric acid C17H26O5 详情 详情
(X) 50573 (2R)-2-[4-methoxy-3-(3-methoxypropoxy)benzyl]-3-methyl-1-butanol C17H28O4 详情 详情
(XI) 50574 4-[(2R)-2-(chloromethyl)-3-methylbutyl]-1-methoxy-2-(3-methoxypropoxy)benzene; 3-[5-[(2R)-2-(chloromethyl)-3-methylbutyl]-2-methoxyphenoxy]propyl methyl ether 324763-39-5 C17H27ClO3 详情 详情
(XII) 50575 (3S,5S)-3-isopropyl-5-[(3S)-3-[4-methoxy-3-(3-methoxypropoxy)benzyl]-4-methylpentanoyl]dihydro-2(3H)-furanone C25H38O6 详情 详情
(XIII) 50576 (3S,5S)-5-[(1R,3S)-1-hydroxy-3-[4-methoxy-3-(3-methoxypropoxy)benzyl]-4-methylpentyl]-3-isopropyldihydro-2(3H)-furanone C25H40O6 详情 详情
(XIV) 50578 (3S,5S)-5-[(1S,3S)-1-azido-3-[4-methoxy-3-(3-methoxypropoxy)benzyl]-4-methylpentyl]-3-isopropyldihydro-2(3H)-furanone C25H39N3O5 详情 详情
(XV) 28129 3-amino-2,2-dimethylpropanamide 324763-51-1 C5H12N2O 详情 详情
(XVI) 50579 (2S,4S,5S,7S)-N-(4-amino-2,2-dimethyl-4-oxobutyl)-5-azido-4-hydroxy-2-isopropyl-7-[4-methoxy-3-(3-methoxypropoxy)benzyl]-8-methylnonanamide C31H53N5O6 详情 详情
Extended Information