Abstract: | Two new ceramides,(2S,3S,4R)-2-N-(2'R)-2'-hydroxypentacosanoylamino]-nonacosane-1,3,4-triol(1)and(2S,3S,4R,8E)-2-N-(2'R)-2'-hydroxytetracosanoylamino]-8-eicosylene-1,3,4-triol(2)have been isolated from the stems of Piper betle L.collected from Baoshan city of Yunnan Province in China.Their structures were determined by spectroscopic and chemical methods. |