Synthesis, conformation, and immunosuppressive activity of cyclosporines that contain .epsilon.-oxygen (4R)-4-[(E)-butenyl]-4,N-dimethyl-L-threonine analogs in the 1-position
作者:Chong Qing Sun、Dominique Guillaume、Brian Dunlap、Daniel H. Rich
DOI:10.1021/jm00167a026
日期:1990.5
epoxidation of cis-allylic alcohol derivative 12 with a peracid, followed by the application of a base-catalyzed intramolecular rearrangement of epoxyurethane 15, which was derived from the reaction of epoxy alcohol 14 and methyl isocyanate. All epsilon-oxygen MeBmt analogues have the same stereochemistry and the same functional groups as those on the alpha,beta,gamma-carbons of MeBmt except for the