%0 Journal Article %T 3a,23-O-Isopropylidenyl-2a,19a-dihydroxy-urs-12-en-28-oic acid, A New Pentacyclic Triterpene Isolated from Rubus aleaefolius as a New Cell Cycle Inhibitor %A Qing-Chun Zhao %A Cheng-Bin Cui %A Bing Cai %A Xin-Sheng Yao %A Hiroyouki Osada %J Molbank %D 2003 %I MDPI AG %R 10.3390/m327 %X No abstract available %K 3a %K 23-O-isopropylidenyl-2a %K 19a-dihydroxy-urs-12-en-28-oic acid %K pentacyclic triterpene %K triterpene %K Rubus aleaefolius %K cell cycle inhibitor %U http://www.mdpi.com/1422-8599/2003/3/M327