Notes
Studies on the Constituents of Catalpa Species. IX.
Iridoids from the Fallen Leaves of Catalpa ovata G. DON
Iridoids from the Fallen Leaves of Catalpa ovata G. DON
2004 年 52 巻 5 号 p. 618-621
詳細
2004 年 52 巻 5 号 p. 618-621
Two new iridoids, 6-O-trans-p-coumaroyl-7-deoxyrehmaglutin A (1) and 6-O-cis-p-coumaroyl-7-deoxyrehmaglutin A (2), were isolated from the fallen leaves of Catalpa ovata G. DON. together with six artifact iridoids (3—8). Their structures were established by spectral analysis. In addition, the scavenging effects of the principal compounds isolated from this plant on 1,1-diphenyl-2-picrylhydrazyl radical-scavenging activity were examined.
