Stereoselective synthesis of β-amino alcohols: practical preparation of all four stereomers of N-PMB-protected sphingosine from l- and d-serine
作者:Sung-Kee Chung、Jae-Mok Lee
DOI:10.1016/s0957-4166(99)00147-0
日期:1999.4
Serine was efficiently converted to the N-p-methoxybenzyl (PMB) protected alpha'-amino enone derivative 6, which was reduced with Zn(BH4)(2) to the corresponding anti-beta-amino alcohol in >96% de. On the other hand, N-PMB-N-Boc-protected alpha'-amino enone derivative 8 was reduced by NaBH4 to syn-product with a diastereoselectivity of ca. 90%. (C) 1999 Elsevier Science Ltd. All rights reserved.