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Guaianolides from Calea subcordata

1984; Elsevier BV; Volume: 23; Issue: 6 Linguagem: Inglês

10.1016/s0031-9422(00)80443-4

1873-3700

Alfonso G. Ober, Leovigildo Quijano, Lowell E. Urbatsch, Nikolaus H. Fischer,

Traditional and Medicinal Uses of Annonaceae

Chemical analysis of Calea subcordata yielded three new guaianolides, 8-epi-isobutyrylrupicolin A, 8-epi-isobutyrylrupicolin B and subcordatolide A, which represent the first guaianolide-type sesquiterpene lactones reported in the genus Calea. The structures of the new compounds were established by chemical and spectroscopic methods.