Abstract: | Three crystals were isolated from the bark of Dacrydium pierrei Hickel and were identified by melting point spectral data (UV, IR, MS, NMR) and GC. Hplc. Crystal Ⅰ is β-ecdysone, Crystal Ⅱ is a jugasterone C. Crystal Ⅲ consists of ponasterone A (ⅢA) and a new phytoecdysone named dacryhainansterone (ⅢB). Total yield of three crystals is 0.4%. |