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Trattinnickia burserifolia has yielded the known ursanes, a-amyrenone, a-amyrin, 3-epi-a-amyrin, 3a,16b-dihydroxyurs-12-ene, the oleananes b-amyrenone, b-amyrin, 3-epi-b-amyrin, 3a,16b-dihydroxyolean-12-ene, the tirucallane acids 3a-hydroxytirucall-8,24-dien-21-oic, 3a-hydroxytirucall-7,24-dien-21-oic and 3-oxotirucall-8,24-dien-21-oic, the dammaranes dammarenediol-II and 3a,20(S)-dihydroxydammar-24-ene. Besides it was isolated the new monoterpene 2(S*)-phenylacetoxy-4(R*)-p-mentha-1(7),5-diene and, the new triterpenes 3b-phenylacetoxyurs-12-ene, 3b-phenylacetoxyolean-12-ene and 3b,16b,11a-trihydroxyurs-12-ene. The triterpenes from T. burserifolia, T. rhoifolia and Dacryodes were analyzed in mixture. Their 13C NMR spectra showed that the major triterpenes were in T. burserifolia a-amyrin and b-amyrin; in T. rhoifolia a-amyrin, b-amyrin, 3-epi-a-amyrin, 3-epi-b-amyrin, and lupenone; in T. rhoifolia a-amyrin, b-amyrin, 3-epi-a-amyrin, 3-epi-b-amyrin, 3a-hydroxytirucall-8,24-dien-21-oic acid and 3a-hydroxytirucall-7,24-dien-21-oic acid; in D. hopkinsii a-amyrin, b-amyrin, lupeol, tirucallol, sitosterol and stigmasterol. Aspects of chemosystematic of the tribe Protieae are discussed.

Phytochemistry of Trattinnickia burserifolia, T. rhoifolia, and Dacryodes hopkinsii: chemosystematic implications