Three Diterpenoids (Excoecarins V1—V3) and a Flavanone Glycoside from the Fresh Stem of Excoecaria agallocha

Three new diterpenoids, excoecarins V1—V3 (1—3) and a new flavanone glycoside (7) were isolated from the fresh stem of Excoecaria agallocha L. Their structures were elucidated as: 2α,3α,18-trihydroxy-3β,20-epoxybeyer-15-ene (1), ent-2,3-secokaur-16-en-2,3-dioic acid (2), ent-3,4-seco-16α-hydroxyatis...

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Veröffentlicht in:	Chemical & Pharmaceutical Bulletin 2003, Vol.51(10), pp.1142-1146
Hauptverfasser:	Konishi, Tenji, Yamazoe, Kiyonori, Kanzato, Masahiro, Konoshima, Takao, Fujiwara, Yasuhiro
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytical, structural and metabolic biochemistry Biological and medical sciences Diterpenes - chemistry Diterpenes - isolation & purification diterpenoid Euphorbiaceae Euphorbiaceae - chemistry Excoecaria agallocha excoecarin V1 flavanone glycoside Flavanones - chemistry Flavanones - isolation & purification Fundamental and applied biological sciences. Psychology Glycosides - chemistry Glycosides - isolation & purification Other biological molecules Plant Extracts - chemistry Plant Extracts - isolation & purification Plant Stems Terpenes, steroids. Hormones
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Zusammenfassung:	Three new diterpenoids, excoecarins V1—V3 (1—3) and a new flavanone glycoside (7) were isolated from the fresh stem of Excoecaria agallocha L. Their structures were elucidated as: 2α,3α,18-trihydroxy-3β,20-epoxybeyer-15-ene (1), ent-2,3-secokaur-16-en-2,3-dioic acid (2), ent-3,4-seco-16α-hydroxyatis-4(19)-en-3-oic acid (3), and 3,5,7,3′,5′-pentahydroxy-2R,3R-flavanonol 3-O-α-L-rhamnopyranoside (7) on the basis of spectroscopic data, chemical evidence, and/or X-ray analysis.
ISSN:	0009-2363 1347-5223
DOI:	10.1248/cpb.51.1142