Premium
Studies on the chemical constituents of Eucalyptus robusta Sm.: Isolation and identification of robustaol B and other constituents
Author(s) -
GuoWei Qin,
RenSheng Xu
Publication year - 1986
Publication title -
acta chimica sinica english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 0256-7660
DOI - 10.1002/cjoc.19860040110
Subject(s) - chemistry , bacillus subtilis , eucalyptus , stereochemistry , chemical constituents , lactone , organic chemistry , botany , bacteria , chromatography , genetics , biology
Abstract Nine known compounds, 5‐hydroxy‐4′,7‐dimethoxy‐6,8‐dimethylflavone, 4′,5‐dihydroxy‐7‐methoxy‐6,8‐dimethylflavone, 3β‐hydroxy‐urs‐11‐ene‐28‐oic‐13(28)‐lactone, 3β‐acetoxy‐urs‐11‐ene‐28‐oic‐13(28)‐lactone, uvaol, β‐sitosterol, 7β‐ O ‐glucoside of 5,7‐dihydroxy‐2‐methylchromone, 1‐triacontanol and 1‐triacontanoic acid, and a new acylphloroglucinol named robustaol B 6 were isolated from the leaves of Eucalyptus robusta Sm. 6 was shown to be 4,6‐dihydroxy‐2‐methoxy isobutyrophenone by spectral analyses and was confirmed by synthesis. 6 showed inhibition against Staphylococcus aureus 209P and Bacillus subtilis 6633 in vitro.