摘要:
Chiral beta-lactam 1 obtained from D-(-)-tartaric acid was converted to a D-erythro-sphingosine equivalent 7 in 35% yield, without yielding a 4Z-geometrical isomer, and L-lyxo-phytosphingosine 8 in 45% yield, respectively. (C) 1999 Elsevier Science Ltd. All rights reserved.