Stereodivergent Addition of Allylmetal Reagents to Imines Derived from (R)-2,3-Di-O-benzylglyceraldehyde by Appropriate Selection of Metal and Double Stereodifferentiation
An improved method of ring closing metathesis in the presence of basic amines: application to the formal synthesis of (+)-lentiginosine and other piperidines and carbamino sugar analogs
摘要:
A generalized method for performing ring closing metathesis in the presence of basic amines has been established and successfully used in the formal synthesis of (+)-lentiginosine as well as some valuable intermediates for the synthesis of several other azasugars and aminocyclitols. (C) 2010 Elsevier Ltd. All rights reserved.
analogs were synthesized by regio and stereoselective epoxide ring opening accompanied by introduction of an amino group. The (4R,5S)-derivative showed stronger inhibitory activity toward type II phospholipaseA2 than the 4-substituted oxazolidinone phospholipid analog previously reported.