Ursane- and oleanane-type triterpenes from Ternstroemia gymnanthera callus tissues.
An investigation on the constituents of the callus tissues of Ternstroemia gymnanthera has led to the isolation of five phytosterols, 15 known triterpenoids, and four new triterpenoids (1-4). The new compounds were characterized by spectroscopic study as 3-epi-corosolic acid lactone (2 alpha,3 alpha-dihydroxyurs-11-en-13 beta,28-olide) (1), 3-epi-ternstroemic acid (2 alpha,3 alpha-dihydroxyurs-12-en-11-on-28-oic acid) (2), ternstroemic acid (2 alpha,3 beta-dihydroxyurs-12-en-11-on-28-oic acid) (3), and gymnantheraic acid (2 alpha,3 alpha-dihydroxy-11 alpha-methoxyurs-12-en-28-oic acid) (4). The isolated triterpenes were compared with those from actinidiaceous plant callus tissues from a chemotaxonomic point of view.
Ikuta
Akira
A
Research Institutes for Science and Technology, and Department of Biological Science and Technology, Science University of Tokyo, 2669 Yamazaki, Noda, Chiba 278-8510, Japan. ikutaaki@rs.noda.tus.ac.jp
Tomiyasu
Hiroaki
H
Morita
Yasumasa
Y
Yoshimura
Kouichi
K
D007564:Japan; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D009828:Oleanolic Acid / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification; D010840:Phytosterols / Q000737:chemistry / Q000302:isolation & purification*; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013237:Stereoisomerism; D028242:Theaceae / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry / Q000145:classification / Q000302:isolation & purification
D010840:Phytosterols; D014315:Triterpenes; C413246:oleanane; D009828:Oleanolic Acid