title: Six New Pentacyclic Triterpenoids from the Fruit of Camptotheca acuminata.
abstract: Six new pentacyclic triterpenoids were isolated from the fruit of Camptotheca acuminata. The chemical structures of the new compounds were elucidated by extensive spectroscopic analysis including HR-ESI-MS, IR, UV, 1D- and 2D-NMR. Moreover, the antibacterial activities of compounds 1, 2, 4, 5, and 6 were evaluated against Staphylococcus aureus, Escherichia coli, Bacillus subtilis and Dickeya zeae. All these tested compounds showed moderate antibacterial activity against Bacillus subtilis and Dickeya zeae.
authors: Foshan University, Foshan, 528000, P. R. China.
authors: Guo-Qiang
authors: GQ
authors: Li
authors: Institute of Traditional Chinese Medicine and Natural Products, Jinan University, Guangzhou, 510632, P. R. China.
authors: Neng-Hua
authors: NH
authors: Chen
authors: Institute of Traditional Chinese Medicine and Natural Products, Jinan University, Guangzhou, 510632, P. R. China.
authors: Yu-Bo
authors: YB
authors: Zhang
authors: Institute of Traditional Chinese Medicine and Natural Products, Jinan University, Guangzhou, 510632, P. R. China.
authors: Pan
authors: P
authors: Li
authors: Institute of Traditional Chinese Medicine and Natural Products, Jinan University, Guangzhou, 510632, P. R. China.
authors: Xiao-Jun
authors: XJ
authors: Huang
authors: Institute of Traditional Chinese Medicine and Natural Products, Jinan University, Guangzhou, 510632, P. R. China.
authors: Ren-Wang
authors: RW
authors: Jiang
authors: Institute of Traditional Chinese Medicine and Natural Products, Jinan University, Guangzhou, 510632, P. R. China.
authors: Guo-Cai
authors: GC
authors: Wang
authors: Institute of Traditional Chinese Medicine and Natural Products, Jinan University, Guangzhou, 510632, P. R. China.
authors: Yao-Lan
authors: YL
authors: Li
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects; D029769:Camptotheca / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry; D015394:Molecular Structure; D053978:Pentacyclic Triterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D053978:Pentacyclic Triterpenes
keywords: 
  Camptotheca acuminata
  ; Antibacterial activities; Triterpenoids