Glochidionionosides A‐D: Megastigmane Glucosides from Leaves of Glochidion zeylanicum (Gaertn.) A. Juss.

Abstract

Carbohydrates Carbohydrates U 0500Glochidionionosides A-D: Megastigmane Glucosides from Leaves of Glochidion zeylanicum (Gaertn.) A. Juss. -[isolation of four new title compounds (I), (II) and (III) and their structure elucidation by spectroscopic methods]. -(OTSUKA*, H.; KIJIMA, H.; HIRATA, E.; SHINZATO, T.; TAKUSHI, A.; BANDO, M.; TAKEDA, Y.; Chem. Pharm. Bull. 51 (2003) 3, 286-290; Dep. Pharmacogn., Grad. Sch. Biomed. Sci., Hiroshima Univ., Minami, Hiroshima 734, Japan; Eng.) -M. Schroeter 32-148

Chemical Constituents from Thalictrum ramosum

“…These data were consistent those in the literature [13]. Compound 7 was elucidated as glochidionionoside A.…”

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Compound 1 was obtained by recrystallization of Fr.…”

Euodionosides A–G: Megastigmane glucosides from leaves of Euodia meliaefolia

“…The HMBC spectra also indicated that 6 and 7 were isomers of each other as to the positions of sugar linkages, the former had a sugar on the hydroxyl group at the 9-position and the latter on that at the 13-position, since correlation between anomeric protons and C-9 (d C 77.3) in 6, and C-13 (d C 70.9) in 7 was observed, respectively. The absolute configuration of the 9-position of 6 was determined to be R on comparison with a similar compound (Takeda et al, 1997) and that of the 6-position was also assigned as R according to the circular dichroism (CD) spectral data (Otsuka et al, 2003b). The absolute configuration of the 9-position was further supported by application of the b-D-glucosylation-induced shift-trend rule ( Table 1, b) (Otsuka et al (1995)), Therefore, the structure of euodionoside F (6) was elucidated to be (6R,9R)-megastigman-4-ene-9,13-diol 9-O-b-D-glucopyranoside.…”

Antitumor, Analgesic and Anti-inflammatory Activities of Glochidion multiloculare (Rottler ex Willd) Voigt

“…Previous phytochemical investigations revealed the isolation of glochidiol, glochilocudiol, glochidone and dimedone (Talapatra et al, 1973). Many secondary metabolites were isolated from Glochidion species, including tannins (Chen et al, 1995), glycosides (Otsuka et al, 2003), lignans (Otsuka et al, 2000), terpenoids (Hui and Li, 1976).…”