Cassane diterpenoids from the roots of Caesalpinia decapetala var. japonica and structure revision of caesaljapin.
Two cassane-type furanoditerpenoids, designated caesalacetal and caesalpinetate, and a norditerpenoid designated caesalpinone were isolated from the roots of Caesalpinia decapetala var. japonica along with seven known diterpenoids. Structures were elucidated by interpretation of their spectroscopic data, and the absolute structure of caesalacetal was confirmed by X-ray crystallographic analysis. Furthermore, the structure of a previously reported furanoditerpenoid, caesaljapin, was revised as its C-4 epimer on the basis of detailed NMR spectroscopic data as well as X-ray crystallographic analysis.
Graduate School of Biosphere Science, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan.
Sayuri
S
Kamikawa
Graduate School of Biosphere Science, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan.
Shiori
S
Oshimo
Graduate School of Biosphere Science, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan.
Emi
E
Ohta
Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan.
Tatsuo
T
Nehira
Graduate School of Biosphere Science, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan.
Hisashi
H
Ômura
Graduate School of Biosphere Science, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan. Electronic address: ohta@hiroshima-u.ac.jp.
Shinji
S
Ohta
D029911:Caesalpinia / Q000737:chemistry*; D003016:Clostridium perfringens / Q000201:enzymology; D018360:Crystallography, X-Ray; D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification* / Q000494:pharmacology; D007564:Japan; D008968:Molecular Conformation; D015394:Molecular Structure; D009439:Neuraminidase / Q000037:antagonists & inhibitors; D019906:Nuclear Magnetic Resonance, Biomolecular; D018517:Plant Roots / Q000737:chemistry; D012639:Seeds / Q000737:chemistry
D004224:Diterpenes; C000609196:caesalacetal; C000609199:caesaljapin; C000609197:caesalpinetate; C000609198:caesalpinone; D009439:Neuraminidase
Caesalacetal; Caesaljapin; Caesalpinetate; Caesalpinia decapetala var. japonica; Caesalpinone; Cassane diterpenoid; Leguminosae