Y. Morimoto et H. Shirahama, SYNTHETIC STUDIES ON VIRANTMYCIN .2. TOTAL SYNTHESIS OF UNNATURAL (-VIRANTMYCIN AND DETERMINATION OF ITS ABSOLUTE STEREOCHEMISTRY()), Tetrahedron, 52(32), 1996, pp. 10631-10652
The enantioselective total synthesis of (+)-virantmycin (1) has been a
chieved by means of the Sharpless asymmetric epoxidation of allylic al
cohol 27 followed by an intramolecular epoxide opening of the exo epox
y alcohol 32 which was derived from the endo epoxy alcohol 28. The syn
thesis of (+)-1 has established that the absolute configuration of the
natural product (-)-1 is shown to be 2R, 3R at the two chiral centers
. Further, antiviral activities of the virantmycin analogs were also e
xamined against influenza virus. Copyright (C) 1996 Elsevier Science L
td