时间:2014-01-03 14:24 文章来源:http://www.lunwenbuluo.com 作者:杨大松 点击次数:
化合物16白色粉末;1H-NMR(acetone-d6,400MHz)δ:6.02(1H,s,H-5),5.94(1H,s,H-3),3.89(3H,s,-OCH3),2.54(3H,s,H-8);13C-NMR(acetone-d6,100MHz)δ:104.5(C-1),165.7(C-2),96.6(C-3),164.7(C-4),91.7(C-5),168.2(C-6),203.4(C-7),32.9(C-8),56.1(-OCH3)。以上波谱数据与文献[17]报道的2,4-二羟基-6-甲氧基苯乙酮数据基本一致。
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ChemicalconstituentsofEuphorbiasikkimensis
YANGDa-song1,2,3,WEIJian-guo1,2,3,4,YANGYong-ping1,2,3,YANGYong-hong4,LIXiao-li1,2,3*
(1.KeyLaboratoryofEconomicPlantsandBiotechnology,KunmingInstituteofBotany,
ChineseAcademyofSciences,Kunming650201,China;
2.PlantGermplasmandGenomicsCenter,theGermplasmBankofWildSpecies,KunmingInstituteofBotany,
ChineseAcademyofSciences,Kunming650201,China;
3.InstituteofTibetanPlateauResearchatKunming,KunmingInstituteofBotany,ChineseAcademyofSciences,
Kunming650201,China;
4.CollegeofPlantProtection,YunnanAgriculturalUniversity,Kunming650201,China)
[Abstract]SixteencompoundswereisolatedfromtheaerialpartsofEuphorbiasikkimensisbymeansofvariouschromatographictechniquessuchassilicagel,SephadesLH-20andRP-18,andtheirstructureswereelucidatedasnaringenin(1),kaempferol(2),quercetin(3),kaempferol-3-O-α-L-arabinopyranoside(4),quercetin-3-O-α-L-arabinopyranoside(5),quercetin-3-O-(2″-galloyl)-α-L-arabinopyranoside(6),5α,8α-epidioxy-(22E,24R)-ergosta-6,22-dien-3β-ol(7),stigmast-5-ene-7-one-3β-ol(8),3β-hydroxy-4α,14α-dimethyl-5α-ergosta-8,24(28)-dien-7-one(9),β-sitosterol(10),10-cucurbitadienol(11),scopoletin(12),ethylgallate(13),p-hydroxybenzaldehyde(14),3-hydroxybenzeneethanol(15),and2,4-dihydroxy-6-methoxy-acetophenone(16)onthebasisofspectroscopicdataanalysis.Allthecompoundsareisolatedfromthisplantforthefirsttime,andcompounds1,4-8,15areobtainedfromEuphorbiaspeciesforthefirsttime.
[Keywords]Euphorbiasikkimensis;flavonoidglycosides;ergosterol;triterpenoid;phenoliccompounds
doi:10.4268/cjcmm20132321
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