Abstract
由下列４種台灣產苦味藥用植物單離出之成分，經各種光譜分析與化學方法鑑定其構造式，歸納如下：1.苦職（physalis angulata L.）///////withangulatin A □, withangulatin B □.2.山芝麻（Helicteres angustifolia L.）根皮之成分///////mansonone E(6), mansonone F(7), mansonone M(10),betulin(11),3-0-acetylbetulin(12),3-0-trans-p-coumaroyl betulin(13),3-0-cis-p-coumaroyl betulin(14)3-0-trans-caffeoyl betulin(15),3-0-trans-feruloyl betulin(16),3-0-trans-p-coumaroyl betulinic acid(17),3-0-cis-p-p-coumaroylbetulinic acid(18),3-0-trans-caffeoyl betulinic acid(pyracrenicacid)(19),3-0-trans-feruloyl betulinic acid(20),methyl3β-acetoxy-27-p-hydroxybenzoy-loxy-lup-20(29)-en-28-oate(22),methyl 3β-acetoxy-27-p-hydroxynzoy-loxy-lup-20(29)-en-28-oate(24), arvenin I(25)arvenin III(26),helicte-roside A(27),helicteroside B(29),cucurbitacin B2-sulphate(31),takakin 8-0-β-D-glucuronide(32),takakin 8-0-β-D-glucuronide 6"-methyl ester(35),takakin 8-0-β-Dglucuronide 2"-sulphate(36),takakin 8-0-β-Dglucoside(37).果實之成分///////kaempferol 3-0-β-glucoside(astrahalin)(38),kaempferol3-0-β-D(6"-0-p-coumaroyl) glucoside(tiliroside)(39).3. 兔仔菜(Ixeris chinensis Nakai)8-epicrepiside G(40),8-epidesacylcynaropicrin glucoside(42),ixerinD(43),LUTELOIN 7-0-β-D-glucopyranosyl-(1→6)-β-D-glucoyranoside(44).4. 台灣蒲公英(Taraxacut formosanum Kitamura)taraxinic acid 1'-0-β-Dglucopyranoside(46).化合物１，２，10，13，14，15，16，17，18，20，22，24，27，29，31，35，36，40是新弋合物（17個）．25，26，27，29，31，40，42，43，46具有苦味（９個）．