Authors: NGASSAPA O SOEJARTO DD PEZZUTO JM FARNSWORTH NR

Citation: O. Ngassapa et al., QUINONE-METHIDE TRITERPENES AND SALASPERMIC ACID FROM KOKOONA-OCHRACEA, Journal of natural products, 57(1), 1994, pp. 1-8

Authors: NGASSAPA O BEECHER CWW PEZZUTO JM FARNSWORTH NR HENDERSON TO BOYE GL

Citation: O. Ngassapa et al., ISOLATION OF ECHINOCYSTIC ACID-3-O-SULFATE, A NEW TRITERPENE, FROM TETRAPLEURA-TETRAPTERA, AND EVALUATION OF THE MUTAGENIC POTENTIAL OF MOLLUSCICIDAL EXTRACTS AND ISOLATES, Journal of natural products, 56(11), 1993, pp. 1872-1877

Authors: NGASSAPA O SOEJARTO DD PEZZUTO JM FARNSWORTH NR

Citation: O. Ngassapa et al., FURTHER LUPANE LACTONES FROM KOKOONA-OCHRACEA, Journal of natural products, 56(10), 1993, pp. 1676-1681