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From the leaves of Ilex brevicuspis were isolated a new triterpene, 20(S)-3&#946;, 19&#945;-dihydroxyurs-12-en-23, 28-dioic acid, named here brevicuspic acid, and two new triterpenoid glycosides, 3-O-&#945;-Larabinopyranosyl-20(S)-pomolic acid-28-O-&#946;-D-glucopyranosyl ester, named brevicuspisaponin 3, and the 23-sodium salt of (20S)3&#946;, 19&#945;, 24-trihydroxyurs-12-en-23, 28-dioic acid-28&#946;-O-&#946;-Dglucopyranosyl ester, along with the known compound 3-O-&#945;-Larabinopyranosyl-20(S)-19&#945;, 24-dihydroxyursolic acid- 28-O-&#946;-Dglucopyranosyl ester, already described for Ilex argentina. Their structures were established on the basis of chemical and spectroscopic methods. Das folhas de Ilex brevicuspis foram isolados e identificados um novo triterpeno, ácido 20(S)-3&#946;, 19&#945;-diidroxiurs-12-en-23, 28-dióico, denominado ácido brevicúspico, e dois novos glicosídeos, éster 28-O-&#946;-Dglicopiranosil do ácido 3&#946;-O-&#945;-L-arabinopiranosil 20(S)-pomólico e o sal sódico em C-23 do ester 28&#946;-O-&#946; D-glicopiranosil do ácido (20S)- 3&#946;, 19&#945;, 24-triidroxiurs-12-en-23, 28-dióico. Foi isolado ainda o éster 28-O-&#946;-D-glicopiranosil do ácido 3&#946;-O-&#945;-L-arabinopiranosil-20(S)-19&#945;, 24-diidroxiursólico, já descrito anteriormente para a espécie Ilex argentina. As estruturas foram estabelecidas por métodos espectroscópicos e químicos

New triterpene and triterpenoid glycosides from Ilex brevicuspis