A SHORT-STEP SYNTHESIS OF SESQUITERPENE LACTONE, 1-OXOEUDESMA-2,4-DIEN-11-BETA-H-12,6-ALPHA-OLIDE, ISOLATED FROM ARTEMISIA-HERBA-ALBA AND ITS DERIVATIVES
T. Kawamata et al., A SHORT-STEP SYNTHESIS OF SESQUITERPENE LACTONE, 1-OXOEUDESMA-2,4-DIEN-11-BETA-H-12,6-ALPHA-OLIDE, ISOLATED FROM ARTEMISIA-HERBA-ALBA AND ITS DERIVATIVES, Synthetic communications, 26(1), 1996, pp. 139-148
1-Oxoeudesma-2,4-dien-11 beta H-12,6 alpha-olide (1) isolated from the
genus Artemisia herb-alba was synthesized from alpha-santonin in a tw
o-step sequence. The key step is the 1,3 oxidative rearrangement of di
enol 7.