Two new sesquiterpene lactones: 8 alpha-(4'-acetoxymethacryloyloxy)-3 alpha ,9 beta -dihydroxy-1(10)E,4Z,11(13)-germacratrien- 12,6 alpha -olide (1) and 8 alpha-(2'E)-(2'-acetoxymethyl-2'-butenoyloxy)-3 alpha ,9 beta -dihydroxy-1 (10)E,4Z,11 (13)-germacratrien-12,6 alpha -olide (2), together with the known zoapatanolide A were isolated from the aerial parts of Montanoa tomentosa Cerv. in La Llave et Lex ssp. microcephala (Sch. Bip. In K. Koch) V.A. Funk (Asteraceae). The structures of all compounds were established on the basis of 1D, 2D NMR, and EIMS analysis.
Two new sesquiterpene lactones from Montanoa tomentosa ssp. microcephala
BRACA, ALESSANDRA;MORELLI, IVANO;
2001-01-01
Abstract
Two new sesquiterpene lactones: 8 alpha-(4'-acetoxymethacryloyloxy)-3 alpha ,9 beta -dihydroxy-1(10)E,4Z,11(13)-germacratrien- 12,6 alpha -olide (1) and 8 alpha-(2'E)-(2'-acetoxymethyl-2'-butenoyloxy)-3 alpha ,9 beta -dihydroxy-1 (10)E,4Z,11 (13)-germacratrien-12,6 alpha -olide (2), together with the known zoapatanolide A were isolated from the aerial parts of Montanoa tomentosa Cerv. in La Llave et Lex ssp. microcephala (Sch. Bip. In K. Koch) V.A. Funk (Asteraceae). The structures of all compounds were established on the basis of 1D, 2D NMR, and EIMS analysis.File in questo prodotto:
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