Collagen cross-links: a convenient synthesis of tert-butyl-(2S)-2-[(tert-butoxycarbonyl)amino]-4-(2-oxiranyl)butanoate
作者:Maciej Adamczyk、Donald D Johnson、Rajarathnam E Reddy
DOI:10.1016/s0957-4166(99)00055-5
日期:1999.2
An efficient synthesis of tert-butyl-(2S)-2-[(tert-butoxycarbonyl)amino]-4-(2-oxiranyl)butanoate (5), the key intermediate for preparation of collagen cross-links (+)-pyridinoline (Pyd, 1) and (+)-deoxypyridinoline (Dpd, 2) was described from (4S)-5-(tert-butoxy)-4-[(tert-butoxycarbonyl)amino]-5-oxopentanoic acid (6) in six steps. Also, an improved synthesis of iodide (2S)-(-)-4b was presented. (C) 1999 Elsevier Science Ltd. All rights reserved.