From the aerial parts of Marrubium globosum ssp. libanoticum, seven labdane diterpenoids were isolated. Three of them are new natural products [(13R)-9R,13R-epoxylabda-6â(19),16(15)-diol dilactone (2), deacetylvitexilactone (7), marrulanic acid (8)], whereas the other four, namely, (13S)-9R,13R-epoxylabda-6â(19),16(15)-diol dilactone (1), cyllenin A (3), 15-epi-cyllenin A (4), and marrulibanoside, are previously known compounds. The structures of 2, 7, and 8 were determined by spectroscopic and chemical methods.
RIGANO D, GRASSIA A, BRUNO M, ROSSELLI S, PIOZZI F, FORMISANO C, et al. (2006). Labdane diterpenoids from Marrubium globosum ssp. libanoticum. JOURNAL OF NATURAL PRODUCTS, 69(5), 836-838 [10.1021/np0505420].
Labdane diterpenoids from Marrubium globosum ssp. libanoticum
BRUNO M;ROSSELLI S;PIOZZI F;
2006-01-01
Abstract
From the aerial parts of Marrubium globosum ssp. libanoticum, seven labdane diterpenoids were isolated. Three of them are new natural products [(13R)-9R,13R-epoxylabda-6â(19),16(15)-diol dilactone (2), deacetylvitexilactone (7), marrulanic acid (8)], whereas the other four, namely, (13S)-9R,13R-epoxylabda-6â(19),16(15)-diol dilactone (1), cyllenin A (3), 15-epi-cyllenin A (4), and marrulibanoside, are previously known compounds. The structures of 2, 7, and 8 were determined by spectroscopic and chemical methods.
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