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2-Pyridinethiolate derivatives from branches and leaves of Polyalthianemoralis and their cytotoxic activities

陵水暗罗枝、叶中的巯基吡啶类化合物及其细胞毒活性研究



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J=72,15Hz,H3,3′),725(1H×2,t,J=72Hz,
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1233(C4),1215(C5),824(C1′),810(C
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35
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Vol.35,Issue 1
January,2010
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[1] 
$%&.$%Ž‰345úü+

$%Ž‰3

u
30
C

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¤û
[M].
78

&yí
,1979:10.
[2] 
(õ˜

v/G

).*

úûüý¡¢£¤/0
[J].
,
`
,1994,29(11):845.
[3] 
\L+

¡,ÿ

”6x

ä

úûüýJ+£¤ƒ/0
I.
‚‘xñG¥‰üý΃¤”Ÿ´µ
[J].
G`
,1981,
39(5):433.
[4] 
\L+

-./

º/

ä

T¬YèÈ&Ž‰£¤ƒˆ‰
¡¢/0
[J].
‚‘’‰/0ÓÀb
,1998,11(3):33.
[5] 
ñH9

ø0C
.Cu(I),Ni(I)2
ÿ¨!
N
=G‰ƒæ
7Ÿ%¦
[J].
$%,&6`
,1995,26(1):62.
[6] BaudinJB,HareauG,JuliaSA,etal.Stereochemistryofdi
rectolefinformationfromcarbonylcompoundsandlithiatedheter
ocyclicsulfones[J].BulSocChimFr,1993,130:856.
[7] CookC,Cave.Regardingtheuseofsubstituentparametersin
statisticalanalysesofmolecularproperties.I.Casestudy:Car
bon13nmrof2substitutedpyridinesandmonosubstitutedben
zenes[J].AustJChem,1989,42:1493.
[8] MeshraneHM,BandyopadhyayA,ReddyGS,etal.Mirowave
thermoalysis:Aconvenientandrapidcouplingofthiolsusing
clayaninsolventfreecondition[J].Synthcommun,2000,30:
701.
[9] InousS.Ipsosbstitutionindipyridylsulfidebythephenylthio
radical[J].JOrgChem,1985,50:1298.
[10] ChouCH,ChiuSJ,LiuWM.Synthesisofpyridothietoneby
flashvacuumpyrolysisof2mecaptonicotinicacid[J].Tetralet,
2002,42:5211,5285
[11] BartonDHR,ChenC,WalGM.Synthesisofdisulfidesvia
sulfenylationofalkylandaryldithiopyridineNoxides[J].Tetra
hedron,1991,47:6127.
[12] 
,-Q

12K

Ð[$

ä
.2
ÿ¨
N
=G!vƒ¾
WŸuæ#1ù
[J].
$%,ø`
,1992,8(2):131.
[13] 
i²3

,-Q

i¾¶

ä
.4
J=¨
2
ÿ¨
N
=G!
vƒ¾WŸuæ#1ù
[J].
$%,øE`
,1996,
12(4):317.
2PyridinethiolatederivativesfrombranchesandleavesofPolyalthia
nemoralisandtheircytotoxicactivities
LUZiming1,DAIShengjun2,CHENRuoyun1,YUDequan1
(1.KeyLaboratoryofBioactiveSubstancesandResourcesUtilizationofChineseHerbalMedicine(MinistryofEducation),
InstituteofMateriaMedica,ChineseAcademyofMedicalSciencesandPekingUnionMedicalColege,Beijing100050,China;
2.SchoolofPharmaceuticalScience,YantaiUniversity,Yantai264005,China)
[Abstract] Objective:ToinvestigatetheactiveconstituentsofthebranchesandleavesofPolyalthianemoralis.Method:The
compoundswereisolatedandpurifiedbysilicagel,macroporousadsorptionresinandSephadexLH20columnchromatographicmeth
ods.Theirchemicalstructureswereelucidatedonthebasisofphysicochemicalpropertiesandspectraldata.Result:Eightcompounds
wereisolatedandidentifiedas:zincpolyanemin(1),nickelbis(pyridineNoxide2thiolate)(2),cupricbis(pyridineNoxide2thi
olate(3),2methanesulfonylpyridine(4),2pyridinethiolateNoxide(5),2,2′dithiodipyridine(6),2thiohydroxypyridinNoxide2
SβDglucopyranoside(7)andpyridineNoxide(8),respectively.Conclusion:Compounds2,46,8werenewnaturalproducts.
ThebioassaysinvitroagainstfivehumantumorcellineswithMTTmethodshowedstrongercytotoxicactivities(IC500.050.09mg·
L-1)forcompounds13and6,andweakercytotoxicactivities(IC505.497.71mg·L
-1)forcompound5.
[Keywords] Polyalthianemoralis;chemicalconstituents;2pyridinethiolatederivatives;cytotoxicactivities
doi:10.4268/cjcmm20100111

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January,2010