Four new ent-kaurane diterpenoids from the fruits of Annona cherimola.
Four new ent-kaurane diterpenoids (16R)-ent-kauran-17,19-diol (1), (16R)-17-hydroxy-ent-kauran-19-oic acid (2), (16S)-17-hydroxy-ent-kauran-19-oic acid (3), and (16R)-17-dimethoxy-ent-kauran-19-oic acid (4) have been isolated from the fresh fruits of Annona cherimola together with eight known compounds. Their structures are determined on the basis of spectroscopic data and optical rotation.
Miyashita
Hiroyuki
H
Faculty of Pharmaceutical Sciences, Sojo University, 4-22-1 Ikeda, Kumamoto 862-0082, Japan.
Nishida
Makiko
M
Okawa
Masafumi
M
Nohara
Toshihiro
T
Yoshimitsu
Hitoshi
H
D031041:Annona / Q000737:chemistry*; D004224:Diterpenes / Q000737:chemistry*; D045786:Diterpenes, Kaurane / Q000737:chemistry* / Q000302:isolation & purification; D005638:Fruit / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry*
D004224:Diterpenes; D045786:Diterpenes, Kaurane; D010936:Plant Extracts