Two clerodane diterpenoids, blepharolides A and B, have been isolated from
Salvia blepharophylla Brandegee ex Epling. Their structures were determined
using a combination of one- and two-dimensional NMR techniques. The relati
ve stereochemistry for blepharolide A was determined by X-ray diffraction.
To our knowledge this :is the first crystal structure determination of a 5,
6-unsaturated octahydro-1H-cyclopropa[a]naphthalene derivative. (C) 1999 El
sevier Science Ltd. All rights reserved.