Showing papers by "César A.N. Catalán published in 1991"
TL;DR: The aerial parts of Stevia grisebachiana afforded, in addition to estafietin, 11αH,13-dihydroestafetin, dehydroleucodin, 10- epi -8-deoxycumambrin, hanphyllin and loliolide, seven new guaianolides and one new germacranolide, was confirmed by X-ray analysis.
27 citations
TL;DR: The aerial parts of Mzkania saltensis yielded, in addition to common plant constituents, two menthane derivatives 1 and 2 new as natural products, pinoresinol, and a new lignan, (1R',2S+,5R*,bS1)-2-~4-hydroxyphenyl)-6-~3-methoxy-4hydroxymhenyl)3,7-dioxabi- cyclo(3.3.O) octane 151.
Abstract: l-he aerial parts of Mzkania saltensis yielded, in addition to common plant constituents, two menthane derivatives 1 and 2 new as natural products, pinoresinol, and a new lignan, (1R',2S+,5R*,bS1)-2-~4-hydroxyphenyl)-6-~3-methoxy-4-hydroxyphenyl)-3,7-dioxabi- cyclo(3.3.O)octane 151.
25 citations
TL;DR: The fusion of the bicyclo[8.1.0]undecane system in the unique sesquiterpene diketone integrifolian-1,5-dione was found to be cis by X-ray analysis as mentioned in this paper.
13 citations