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【结 构 式】

【分子编号】52909

【品名】phenyl (3R,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)-1-piperidinecarboxylate

【CA登记号】

【 分 子 式 】C13H17NO5

【 分 子 量 】267.28172

【元素组成】C 58.42% H 6.41% N 5.24% O 29.93%

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 selective reduction of methyl nicotinate (I) with simultaneous protection of the resulting NH group with phenyl chloroformate gives the 1,2-dihydropyridine derivative (II), which is treated with MCPBA (III) to afford the hydroxyester (IV). The reduction of (IV) with Tms-OTf and borane/THF complex affords the allylic alcohol (V), which is oxidized with CrO3 in acetone to provide the ketone (VI). The asymmetric reduction of (VI) with LiAlH4 catalyzed by (-)-N-methyl-ephedrine gives the chiral alcohol (VII), which is treated with refluxing 1N HCl to yield the carboxylic acid (VIII).The reduction of (VIII) with borane/THF complex and H2O2 affords the chiral carbinol (IX), which is finally deprotected by treatment with LiOH to provide the target isofagomine.

1 Zhao, G.; et al.; Selective fowler reductions: Asymmetric total synthesis of isofagomine and other 1-azasugars from methyl nicotinate. Org Lett 2001, 3, 2, 201.
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) 13980 methyl nicotinate; Nicotinic acid, methyl ester 93-60-7 C7H7NO2 详情 详情
(II) 52903 3-methyl 1-phenyl 1,3(2H)-pyridinedicarboxylate C14H13NO4 详情 详情
(III) 17888 m-Chloroperbenzoic acid; 3-Chlorobenzenecarboperoxoic acid 937-14-4 C7H5ClO3 详情 详情
(IV) 52904 3-methyl 1-phenyl 5-[(3-chlorobenzoyl)oxy]-6-hydroxy-5,6-dihydro-1,3(2H)-pyridinedicarboxylate C21H18ClNO7 详情 详情
(V) 52905 3-methyl 1-phenyl 5-hydroxy-5,6-dihydro-1,3(2H)-pyridinedicarboxylate C14H15NO5 详情 详情
(VI) 52906 3-methyl 1-phenyl 5-oxo-5,6-dihydro-1,3(2H)-pyridinedicarboxylate C14H13NO5 详情 详情
(VII) 52907 3-methyl 1-phenyl (5S)-5-hydroxy-5,6-dihydro-1,3(2H)-pyridinedicarboxylate C14H15NO5 详情 详情
(VIII) 52908 (5S)-5-hydroxy-1-(phenoxycarbonyl)-1,2,5,6-tetrahydro-3-pyridinecarboxylic acid C13H13NO5 详情 详情
(IX) 52909 phenyl (3R,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)-1-piperidinecarboxylate C13H17NO5 详情 详情
Extended Information