Methyl migrated cassane-type furanoditerpenes of Caesalpinia crista from Myanmar.
From the CH2Cl2 extract of seed kernels of Caesalpinia crista from Myanmar, two rare and biogenetically interesting methyl migrated cassane-type furanoditerpenes [caesalpinins MM (1) and MN (2)] and two normal cassane-type furanoditerpenes [caesalpinins MO (3) and MP (4)] have been isolated, together with eight known cassane-type diterpenes, 1-deacetoxy-1-oxocaesalmin C (5), 1-deacetylcaesalmin C (6), caesalmin C (7), bonducellpin C (8), caesaldekarin e (9), 2-acetoxycaesaldekarin e (10), 2-acetoxy-3-deacetoxycaesaldekarin e (11), and norcaesalpinin E (12). Among the known compounds, compounds 5 and 6 were for the first time isolated from a natural source. The structures of these compounds were elucidated by the use of spectroscopic techniques.
Kalauni
Surya Kant
SK
Institute of Natural Medicine, Toyama Medical and Pharmaceutical University, Toyama, Japan.
Awale
Suresh
S
Tezuka
Yasuhiro
Y
Banskota
Arjun Hari
AH
Linn
Thein Zaw
TZ
Kadota
Shigetoshi
S
D029911:Caesalpinia / Q000737:chemistry*; D002247:Carbon Isotopes; D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy / Q000379:methods / Q000592:standards; D008968:Molecular Conformation; D002052:Myanmar; D011522:Protons; D012015:Reference Standards; D012639:Seeds / Q000737:chemistry; D013237:Stereoisomerism
D002247:Carbon Isotopes; D004224:Diterpenes; D011522:Protons