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A new isoindole alkaloid from leaves of Cassia siamea

傣药铁刀木叶中一个新的异吲哚生物碱



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AnewisoindolealkaloidfromleavesofCassiasiamea
ZHOULing,DONGWei,WANGYuede,ZHOUKun,MAHangying,YANGYan,
XINGHuanhuan,ZHOUMin,HUQiufen,YEYanqing
(KeyLaboratoryofChemistryinEthnicMedicinalResources,StateEthnicAfairsCommision&
MinistryofEducation,YunnanMinzuUniversity,Kunming650500,China)
[Abstract] Anewisoindolealkaloid(1),hasbeenisolatedfromtheleavesofCasiasiameabyusingvariouschromatographictech
niquesCompound1isanewcompound,determinedas5(hydroxymethyl)2methyl6prenylisoindolin1one,anditdisplayedcyto
toxicityagainstNB4,A549,SHSY5Y,PC3andMCF7cellineswithIC50 valuesof32,46,28,64,25μmol·L
-1,
respectively
[Keywords]  Daidrug;Casiasiamea;isoindolealkaloid;cytotoxicity
doi:104268/cjcmm20160913
  
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2016
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Vol41,No.9 May,2016
   Ÿ1 _ª¨ 1œ 1HNMR# 13CNMR=ò(CDCl3,500/125MHz)
Table1 1Hand13CNMRspectraldataofcompound1(CDCl3,500/125MHz)
No δC δH(m,J,Hz) HMBC(1H→13C) No δC δH(m,J,Hz) HMBC(1H→13C)
1 1685s 1′ 276t 333(d,69) 5,6,7,2′,3′
3 448t 425s 1,3a,4,7a,7′ 2′ 1233d 534(t,69) 6,3′,4′,5′
3a 1362s 3′ 1333s
4 1258d 682s 3,5,6,3a,7a 4′ 172q 158s 2′,3′,5′
5 1429s 5′ 257q 180s 2′,3′,4′
6 1346s 6′ 635t 548s 4,5,6
7 1265d 747s 1,5,6,3a,7a 7′ 334q 289s 1,3
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