Alvarenga, N L A new antibiotic nortriterpene quinone methide from Maytenus catingarum. [electronic resource] - Journal of natural products May 1999 - 750-1 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0163-3864 Standard No.: 10.1021/np980359p doi Subjects--Topical Terms: Anti-Bacterial Agents--isolation & purificationCandida albicans--drug effectsGram-Negative Bacteria--drug effectsGram-Positive Bacteria--drug effectsMagnetic Resonance SpectroscopyMicrobial Sensitivity TestsNorsteroids--isolation & purificationPlant Roots--chemistryRosales--chemistrySpectrophotometry, InfraredSpectrophotometry, Ultraviolet