Regio- and stereoselective oxyfunctionalization at C-1 and C-5 in sesquiterpene guaianolides
摘要:
The regio- and stereoselective functionalization at C-1 and C-5 positions in a guaiane skeleton by allylic hydroxylation are described The stereochemistry of the resulting compounds are identical to those of the majority of natural 1- and 5-hydroxy-guaianolides. (C) 1998 Elsevier Science Ltd. All rights reserved.
Syntheses of arborescin, 1,10-epiarborescin, and (11S)-guaia-3,10(14)-dieno-13,6.alpha.-lactone, the key intermediate in Greene and Crabbe's estafiatin synthesis, and the stereochemical assignment of arborescin