Four new oleanane triterpene saponins were isolated and purified from the whole plant of
Clinopodium urticifolium. They were 3β, 16β, 23, 28-tetrahydroxyoleana-9 (11), 12(13)-diene-3-
yl-[β-D-glucopyranosyl-(1→2)]-[β-D-glucopyranosyl-(1 →3)]- β-D-fucopyranoside 1; 3β, 16β,
21β, 23, 28-pentahydroxyoleana-9(11), 12(13)-diene-3-yl-[β-D-glucopyranosyl-(1→2)]-[ β-D-
glucopyranosyl-(1→3)]- β-D-fucopyranoside 2; 3β, 16β, 23, 28-tetrahydroxyoleana-9(11), 12(13)-
diene-3-yl-[β-D-glucopyranosyl-( 1 →6)- β-D-glucopyranosyl-( 1 →3)]-[β-D-glucopyranosyl-( 1 →2)]-
β-D-fucopyranoside 3; 3β, 16β, 23, 28-tetrahydroxyoleana-9(11), 12(13)-diene-3-yl-[β-D-gluco-
pyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl-(1→3)]-[β-D-glucopyranosyl-
(1→2)]- β-D-fucopyranoside 4. Their structures were elucidated on the basis of interpretation of
NMR and MS data and from chemical evidence.
Li Ming GAO, Xiao Mei WEI, Dong Liang CHENGDepartment of Chemistry, National Laboratory of Applied Organic Chemistry,Lanzhou University, Lanzhou 730000 Department of Chemistry, Northwest Normal University, Lanzhou 730070
合成了N-［(2-羟基-5-甲基苯)（苯基）］亚甲基邻苯二胺，晶体属单斜晶系，空 间群P21/c. 晶胞参数 a = 1.034 0(6) nm， b =1.092 0(3) nm， c =1.472 0(4) nm, β = 107.89(3)°, 化学式C20H18N2O, M r =302.36， Z =4, V =1.581 7(10) nm3 ， D c = 1.268 g/cm3， F （000）= 160，最终偏离因子 R1 = 0.054 1. 结构分析表明，分子间以氢键形成二聚体，二聚体 的分子间互为中心对称. 循环伏安法表明标题化合物的电极反应是一个不可逆的单电子传荷 过程.
Hydroxy 5 methylphenyl)(phenyl)methyl] 2 pyridylbenzimidazole was synthesized and its crystal structure was determined by X ray four cycle diffraction method. The crystal belongs to monoclinic, space group P2 1 /c , with the crystal cell parameters: a =1.351 4(5) nm, b =0.965 9(6) nm, c =1.674 0(3) nm, β =110.2 7(2)°, V =2.049 7(14) nm 3, Z=4, D c=1.269 g/cm 3, R 1= 0.057 5 . The analyses of crystal structure show that the chain structure is formed by intermolecular H bond. [WT5HZ]
Plants of the Senecio Kaschkarovii are widely distributed in the southeast districts of Gansu province of China.In the past few years several sesquiterpenes had been isolated from this family compositae.On the basic of the previous work,four furoeremophilanes were also isolated from Senecio kaschkarovii.Their structures, were identified as 1α-acetoxy-6β-angeloyloxy-10β-hydroxy-9-oxofuroeremophilane(1);1α-methacryloyloxy-6β-Acetoxy-10β-hydroxy-9-oxofuroeremophilane(2);6β-isobutyloxy-10(1)-en-9-oxofuroeremophilane(3);1β-acetoxy-6β-acetoxy-10β-H-9-oxofuroeremophilane(4) by means of spectroscopic techniques(UV,IR,NMR,MS,CD) and chemical properties,.Compound 3 was obtained from Senecio kaschkarovii for the first time.Compound 4 was a new compound,and its absolute configuration was determined.
