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 relative 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 Elsevier Science Ltd. All rights reserved.
Clerodane diterpenoids from Salvia blepharophylla.
BISIO, ANGELA;ROMUSSI, GIOVANNI;CIARALLO, GIOVANNI;
1999-01-01
Abstract
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 relative 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 Elsevier Science Ltd. All rights reserved.
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