简介：ThereactionsofcryptotanshinoneandtanshinoneⅡAwithcadaverineandputrescinewereinvestigated.Sixnewcompounds,fourwithimidazolefunctionalgroupsandtwowithoxazolegroups,wereobtained.Thepossiblereactionmechanismwasproposed.

简介：AnewphytoecdysteroidwasisolatedfromtherootofRhaponticumuniflorum.Itsstructurehasbeenshowntobe2,3,20,22-diacetonideajugasterone.

简介：三新diarylheptanoids，即，钠(5S,2E)-1,7-bis(4-hydroxyphenyl)-1-hydroxy-2-hepten-5-sulfonate(1)，钠(5R,2E)-1,7-bis(4-hydroxyphenyl)-1-hydroxy-2-hepten-5-sulfonate(2)和3,5-diacetoxy-1-(3-methoxy-4,5-dihydroxyphenyl)-7-(4-hydroxy-3-methoxyphenyl)heptane(3)从姜officinale的根茎被孤立。新混合物的结构根据分光镜的方法被阐明。3的抗氧化剂活动在包含DPPH自由激进分子和超级氧化物阴离子激进分子的vitro模型旁边是assayed。

简介：Twonewent-kauranediterpenoids,taihangexcisoidesinC(1)anditsacetonide,taihangexcisoidesinD(2)wereisolatedfromtheleavesofIsodonexcisoides.Theirstructuresweredeterminedby1Dand2Dspectroscopicanalysis.

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简介：Anewcompound,6-methylsulfinylthieno[3,2-g]-2,4(1H,3H)-pteridinedione,wasisolatedfromthewaterextractofWhitmaniapigraWhitman.ItsstructurewaselucidatedonthebasisofNMRandESIMSspectra.

简介：新alloaromadendrane类型sesquiterpene，(?)-alloaromadendrane-3β,9β-diol(1)，从锦鸡儿属植物intermediia的天线部分被孤立。(?)-alloaromadendrane-3β,9β-diol(1)的结构被分光镜的方法建立，包括提供了它的相对立体化学的X光检查分析。生物鉴定证明(?)-alloaromadendrane-3β,9β-diol(1)与10μg/mL的MIC价值拥有anti-pyriculariaoryzaeP-2b活动。

简介：ＡＮＥＷＣＹＣＬＯＰＥＰＴＩＤＥＦＲＯＭＶＡＣＣＡＲＩＡＳＥＧＥＴＡＬＩＳ￥ＲｏｎｇＰｉｎｇＺＨＡＮＧ；ＣｈｅｎｇＺＯＵ；ＹｕＫｕｎＣＨＡＩ；ＪｕｎＺＨＯＵ（ＬａｂｏｒａｔｏｒｙｏｆＰｈｙｔｏｃｈｅｍｉｓｔｒｙ，ＫｕｎｍｉｎｇＩｎｓｔｉｔｕｔｅｏＦｂ...

简介：Anewfurobenzopyranone,namedanaphalisol,wasisolatedfromthewholeplantofAnaphalislactea.Itsstructurewaselucidatedbyspectroscopicmethodsincluding2DNMRtechniques.

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简介：AnewceramideanditsglycosidewereisolatedfromtheflowerofAlbiziajulibrissin.Theirstructureswereestablishedas(25,35,4R,8E)-2-[(2’R)-hydroxyhexadecanoylamino]-8-tetra-cosene-l,3,4-triol(I)and1-O-β-D-glucopyranosy1-(2S,3S,4R,8E)-2-[(2’R)-hydroxy-hexade-canoylamino]-8-tetracosene-1,3,4-triol(II)onthebasisofchemicalandspectroscopicstudies.

简介：Anewxanthone,1,2-dihydro-3,6,8-trihydroxy-1,l-bis(3-methylbut-2-enyl)-5-(l,1-dimcthylprop-2-enyl)-xanthen-2,9-dione(1),hasbeenisolatedfromtheaerialpartofHypericumerectum.

简介：烷基配糖物1并且芳基glycosides24stereospecifically高度从商业地可得到的开始的材料在46步上被综合。acetobromo的联合反应--有unprotectivedihydroxyaglycon的D葡萄糖面对钠氢氧化物面对银氧化物，或与芳香的aglycon生产了关键中介。仅仅配置glycosides在这个过程被形成。所有这些glycosides的合成第一次被报导。

简介：Inconsiderationoftheadsorptionofsolvent,diluentandsolutemoleculesonthesurfaceofastationaryphase,anewequationforsoluteretentioninliquidchromatographyispresented.Thisequationincludesthreeparameters:thedisplacementequilibriumconstant(Ksd)betweenthesolventanddiluentmoleculesonthesurfaceofthestationaryphase,thetotalnumber(N)ofthesolventanddiluentmoleculesreleasedfromthestationaryphaseafteronesolutemoleculebeingadsorbed,andtheparameter(I)relatedtothethermodynamicequilibriumconstantforthesoluteadsorptiononthestationaryphase.Overthewholeconcentrationrangeofthesolventinthemobilephase,theexperimentalretentiondatacanbewelldescribedbythisequation,parametersKsd,NandIcanbeobtainedbytheregressionanalysisoftheexperimentalretentiondata,andconsequentlythenumberofthesolventandthediluentmoleculesdisplacedbyonesolutemoleculefromthestationaryphasecanalsobederivedatdifferentsolventconcentrationsinthemobilephase.

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简介：新diarylheptanoid，3,5-dimethoxyl-17-hydroxyl-4,11,19-triketo-[7,0]meta-cyclophane，作为rubanone说出1，与四已知的混合物一起从Myricarubra的bark被孤立25。他们的结构被各种各样的分光镜的方法与真实样品包括2D-NMR技术或比较阐明。

简介：Anewtriterpene,25-methylenecyclopholidonylp-hydroxy-trans-cinnamate,wasisolatedfromaorchidPholidotayunnanensis.Thestructureelucidationand^1H,^13C-NMRassignmentswereachievedbyspectralandchemicalmethod.

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简介：二新chalcones，尾，2鈥?4鈥?5鈥?tetramethoxychalcone1，并且尾，2鈥?5鈥?trimethoxyfurano[4鈥?5鈥?3鈥?4鈥瞉-chalcone2从乙醇被获得Fordiacauliflora的茎的乙醇摘录的醋酸盐可溶的部分。他们的化学结构被分光镜的证据的分析决定。

简介：Twonewterpenes,wilfornineH(1)andtriptobenzeneQ(2)wereisolatedfromTripterygiumwilfordii,aswellas11terpenes.Theirstructureswereelucidatedbyspectroscopicmethods.Compounds5,9-13showedsignificantimmunosuppressiveactivities.