24-Methylenecholest-5-ene-7-oxo-3β,19-diacetate 5 was synthesized starting from stigmasterol via twelve step reactions ......

前文报道了从西沙群岛采集的软珊瑚Nephthea albida和南沙群岛采集的软珊瑚Nephthea tixiexae verseveldt分离到一种罕见的含19-羟......