title: Two novel cytotoxic and antimicrobial triterpenoids from Pseudolarix kaempferi.
abstract: Two novel antimicrobial and cytotoxic triterpenoids, isopseudolarifuroic acids A (1) and B (2), were isolated from the bark of Pseudolarix kaempferi. The structural elucidation of two novel compounds was carried out mainly by spectroscopic methods, and also by computer modeling. Compounds 1 and 2 exhibited significant cytotoxic activities against several tumor cell lines. Compound 1 also showed most potent antimicrobial activities against both Gram-positive and Gram-negative bacteria.
authors.affiliation: Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 294 Taiyuan Road, 200031, Shanghai, PR China.
authors.forename: S P
authors.initials: SP
authors.lastname: Yang
authors.forename: J M
authors.initials: JM
authors.lastname: Yue
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D006090:Gram-Negative Bacteria / Q000187:drug effects; D006094:Gram-Positive Bacteria / Q000187:drug effects; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008826:Microbial Sensitivity Tests; D014197:Trees / Q000737:chemistry*; D014315:Triterpenes
chemical_list: D000900:Anti-Bacterial Agents; D014315:Triterpenes; C447628:isopseudolarifuroic acid A; C447629:isopseudolarifuroic acid B