Triflavonoids of Ochna calodendron

• Published in: Phytochemistry (Oxford) Vol. 59; no. 4; pp. 435 - 438
• Main Authors: Messanga, Bernard Blaise, Kimbu, Samuel Fon, Sondengam, Beibam Luc, Bodo, Bernard
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Ltd 01-02-2002; Elsevier
• Subjects: Biochemistry; Biochemistry, Molecular Biology; Biological and medical sciences; Caloflavan A, B; Chemical constitution; Cyanoglucoside; Ericales - chemistry; Fundamental and applied biological sciences. Psychology; Isoflavones; Isoflavones - chemistry; Isoflavones - isolation & purification; Leaves; Life Sciences; Magnetic Resonance Spectroscopy; Mass Spectrometry; Molecular Structure; Ochna calodendron; Ochnaceae; Plant Leaves - chemistry; Plant physiology and development; Plants, Medicinal - chemistry; Triflavonoids; Leaves; Ochnaceae; Triflavonoids; Ochna calodendron; Caloflavan A, B; Isoflavones; Cyanoglucoside; Molecular structure; Dicotyledones; Angiospermae; Isolation; Spermatophyta; Plant leaf; Cyanogenic glucoside; Flavonoid; Isoflavone derivatives; Medicinal plant
• ISSN: 0031-9422; 1873-3700
• DOI: 10.1016/S0031-9422(01)00414-9

Phytochemical investigation of the dichloromethane extract of
Ochna calodendron leaves resulted in the isolation and identification of three known isoflavones, irilone, 3′-methoxyirilone and prunetin, one cyanoglucoside, menisdaurin, in addition to two new triflavonoid constituents, namely caloflavans A and B. The structures of the new compounds were established by spectroscopic methods (EI–MS, FAB–MS,
1H NMR,
13C NMR, HMBC and HMQC).
Two triflavonoids, caloflavan A (
1) and B (
2) were isolated from the methanolic leaves extract of
Ochna calodendron, in addition to four known compounds described for the first time in this plant.