Sd. Sarker et al., PUNISTERONE R,24S)-25-DEOXY-11-ALPHA,20,24-TRIHYDROXYECDYSONE] - A NEW PHYTOECDYSTEROID FROM BLANDFORDIA-PUNICEA, Journal of natural products, 59(8), 1996, pp. 789-793
A new phytoecdysteroid, punisterone [(20R,24S)-25-deoxy-11 alpha,20,24
-trihydroxyecdysone] (1), together with six known ones, ecdysone, 20-h
ydroxyecdysone, 5 beta,20-dihydroxyecdysone, ponasterone C, pterostero
ne, and turkesterone, have been isolated from the seeds of Blandfordia
punicea.