Ld. Sun et al., SYNTHESIS OF EUDESMANOLIDES POSSESSING DENEBUTENOLIDE AND ENDOCYCLIC ALPHA,BETA-UNSATURATED BUTENOLIDE FROM ALPHA-(-)-SANTONIN, Synthetic communications, 28(20), 1998, pp. 3751-3755
A new and efficient method of double bond functionalization of eudesma
nolide was carried out by rearrangement of epoxide with methoxide, whi
ch is important to synthesis of bioactive natural products containing
denebutenolid(1) and endocyclic alpha,beta -unsaturated butenolide (2)
.