Synthesis of cyclopropanoid 2-epi-muramyldipeptide analogues as potential immunostimulants
摘要:
The preparation of cyclopropanoid 2-epi-muramyldipeptide analogues from suitable substituted cyclopropylamines is described. (C) 2004 Elsevier Ltd. All rights reserved.
Asymmetric Synthesis of 2,3-Dihydro-4-pyranones by Reaction of Chiral 3-Alkoxycyclobutanone and Aldehydes
摘要:
Chiral cyclobutanone which had ethyl L-lactate as a chiral auxiliary at the 3-position reacted with aldehydes to give 2,3-dihydro-4-pyranones in up to 93% ee by combined use of titanium(IV) chloride and tin(II) chloride.