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1.
Phytochemical investigation of the leaves of Aralia elata has led to the isolation of four new compounds, 3-O-β-D-glucopyranosyl (1→3)-β-D-glucopyranosyl (1→3)-β-D-glucopyranosyl oleanolic acid (1), 3-O-[β-D-glucopyranosyl (1→3)-β-D-glucopyranosyl (1→3)]-[β-D-glucopyranosyl (1→2)]-β-d-glucopyranosyl hederagenin 28-O-β-D-glucopyranoside (2), 3-O-{[β-D-glucopyranosyl (1→2)]-[β-d-glucopyranosyl (1→3)-β-d-glucopyranosyl (1→3)]-β-D-glucopyranosyl} oleanolic acid 28-O-β-D-glucopyranosyl ester (3) and 3-O-[β-D-glucopyranosyl (1→2)]-[β-D-glucopyranosyl (1→3)]-β-d-glucopyranosyl caulophyllogenin (4) and two known compounds, 3-O-[β-D-glucopyranosyl (1→3)-α-l-arabinopyranosyl]-echinocystic acid (5) and 3-O-α-L-arabinopyranosyl echinocystic acid (6). The structural determination was accomplished with spectroscopic analysis, in particular (13)C-NMR, 2D-NMR and HR-ESI-MS techniques. Compounds 1-6 were tested for their inhibition of the growth of HL60, A549 and DU145 cancer cells. Compound 1 showed significant cytotoxic activity against HL60 and A549 cancer cells with IC(50) values of 6.99μM and 7.93μM respectively. In addition, compounds 5 and 6 showed significant cytotoxic activity against HL60 cancer cells with IC(50) values of 5.75μM and 7.51μM, respectively. 相似文献
2.
Three new steroidal saponins, japonicoside A (1), japonicoside B (2) and japonicoside C (3) were isolated from the dried rhizomes and roots of Smilacina japonica A. Gray. Their structures were elucidated as (25S)-5α-spirostan-9(11)-en-3β-ol 3-O-β-D-glucopyranosyl-(1→2)-[β-D-xylopyranosyl-(1→3)]-β-D-glucopyranosyl-(1→4)-β-D-galactopyranoside (1), (25S)-5α-spirostan-9(11)-en-3β,17α-diol 3-O-β-D-glucopyranosyl-(1→2)-[β-D-xylopyranosyl-(1→3)]-β-D-glucopyranosyl-(1→4)-β-D-galactopyranoside (2) and (25S)-5α-spirostan-9(11)-en-3β,17α,24α-triol 3-O-β-D-glucopyranosyl-(1→2)-[β-D-xylopyranosyl-(1→3)]-β-D-glucopyranosyl-(1→4)-β-D-galactopyranoside (3) on the basis of chemical methods and detailed spectroscopic analysis, including 1D, 2D NMR and HR-ESI-MS. The cytotoxicity of isolated compounds was evaluated in vitro for cytotoxic properties against human hepatocellular carcinoma cells (SMMC-7221) and human colorectal adenocarcinoma cells (DLD-1), respectively. 相似文献
3.
Calendin (1), cinnamic acid (2), 3-hydroxy-1-(4-hydroxy-3-methoxyphenyl)-propan-1-one (3), 2,3-dihydroxy-1-(4-hydroxy-3-methoxyphenyl)-propan-1-one (4), 3-hydroxy-1-(4-hydroxy-3,5-dimethoxyphenyl)-propan-1-one (5), syringic acid (6) and vanillic acid (7) have been isolated from a dichloromethane extract of the leaves and branches of Cassia laevigata. 相似文献
5.
刺槐优良无性系耐碱盐特性研究 总被引：3，自引：0，他引：3
从选定的刺槐优良无性系中选取W013,W009,C003,W038,W041等5个速生的优良无系,W037作为较差表现对比,石林作为对照进行盆栽抗盐试验。设置中性盐B1,NaCl:Na_2SO_4(1:1);碱性盐B2,NaHCO_3:Na_2CO_3(1:1);混合盐碱B3,NaCl:Na_2SO_4:NaCO_3:Na_2CO_3(1:1:1:1)3组。每组设置3个浓度梯度,Al:3g/L,A2:5g/L,A3:7g/L,分别测定其形态及生理生化指标并分析。结果表明:耐盐碱特性大小为W013,W009,C003石林刺槐W037,W038,W041,其中W013,W009,C003在7g/L仍表现出较强的耐盐碱特性。 相似文献
6.
In addition to kaempferol 3-O-rhamnoside-7-O-glucoside, the methanol extract of the aerial parts of Mentha lavandulacea yielded three new flavonoids identified as kaempferol 3-O-glucosyl-(1-->2)-rhamnoside-7-O-glucoside (1), kaempferol 3-O-(6"'-p-coumaroylglucosyl)-(1-->2)-rhamnoside-7-O-glucoside (2) and kaempferol 3-O-(4"'-p-coumaroylglucosyl)-(1-->2)-rhamnoside-7-O-glucoside (3). 相似文献
7.
Two new diarylheptanoids (1, 2), together with two known analogs (3, 4), were isolated from the rhizomes of Alpinia officinarum. The new compounds were elucidated to be (5S)-5-hydroxy-7-(3, 4-dihydroxyphenyl)-1-phenyl-3-heptanone (1) and (5R)-5-hydroxy-7-(3-methoxy-4, 5-dihydroxyphenyl)-1-phenyl-3-heptanone (2) based on their spectral analysis. Compound 4 showed moderate cytotoxicity against human tumor cell lines, HepG2, MCF-7 and SF-268, while no significant effect were found for compounds 1-3. 相似文献
8.
9.
Two new pregnane glycosides, baseonemoside A and B, were isolated from the aerial parts of Baseonema acuminatum. Their structures were established as pregn-5-ene-3beta,16alpha,20(S)-triol 3-O-beta-D-cymaropyranosyl-(1-->4)-beta-D-digitoxopyranoside 20-O-beta-D-glucopyranosyl-(1-->2)-beta-D-digitalopyranoside 1 and pregn-5-ene-3beta,16alpha,20(S)-triol 3-O-beta-D-cymaropyranosyl-(1-->4)-beta-D-cymaropyranosyl-(1-->4)-beta-D-digitoxopyranoside 20-O-beta-D-glucopyranosyl-(1-->2)-beta-D-digitalopyranoside 2, respectively, on the basis of spectral evidence and chemical transformation. 相似文献
10.
A new triterpenoid saponin was isolated from the roots of Silene cucubalus and its structure was determined on the basis of one- and two-dimensional NMR spectroscopy as gypsogenin 3-O-beta-xylopyranosyl-(1-->3)-[beta-galactopyranosyl-(1-->2)]-beta-glucuronopyranoside. A known saponin, quillaic acid 3-O-beta-xylopyranosyl-(1-->3)-[beta-galactopyranosyl-(1-->2)]-beta-glucuronopyranoside, was also isolated. 相似文献
11.
不同生根处理及不同扦插基质对土沉香苗木生根的影响 总被引：1，自引：0，他引：1
通过3因素3水平正交试验设计L9(34)研究了不同生根促进剂(R)、不同生根促进剂浓度(T)及插穗不同基部下切口型(Y)对土沉香扦插育苗生根率、生根数的影响差异,研究了不同基质(E)对土沉香扦插育苗的影响差异。结果表明:使用ABT-1#(R1)+750×10-6(T3)+双削面(Y3),即R1T3Y3组合效果最佳,平均成活率达89.1%、平均单株生根数达9.9条;4种不同基质扦插对比试验中以红壤:珍珠岩=1∶1(E4)最佳,平均生根率达到90.3%。 相似文献
12.
The roots of Terminalia alata yielded three new glycosides: 3,3'-di-O-methylellagic acid 4-O-beta-D-glucopyranosyl-(1-->4)-beta-D-glucopyranosyl-(1-->2)-alpha-L-arabinopyranoside (1), 5,7,2'-tri-O-methylflavanone 4'-O-alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranoside (2), and 2alpha,3beta, 19beta,23-tetrahydroxyolean-12-en-28-oic acid 3-O-beta-D-galactopyranosyl-(1-->3)-beta-D-glucopyranoside-28-O-beta-D-glucopyranoside (3). Compounds 2 and 3 displayed antifungal activity. 相似文献
13.
Luisella Verotta Marco Guerrini N. A. El-Sebakhy Aya M. Asaad Soad M. Toaima Moahamed E. Abou-Sheer Ying-De Luo John M. Pezzuto 《Fitoterapia》2001,72(8)
From Astragalus peregrinus, four cycloartane-type saponins have been isolated and their structures elucidated by spectral means as 20(R),24(S)-epoxy-9β,19-cyclolanostane-3β,6α,16β,25-tetrol 3-O-β-
-glucopyranoside (1), 20(R),24(S)-epoxy-9β,19-cyclolanostane-3β,6α,16β,25-tetrol 3-O-α-
-rhamnopyranosyl-(1→4)-β-
-glucopyranoside (2), 20(R),24(S)-epoxy-9β,19-cyclolanostane-3β,6α,16β,25-tetrol 3-O-α-
-rhamnopyranosyl-(1→2)-β-
-glucopyranoside (3) and 20(R),25-epoxy-9β,19-cyclolanostane-3β,6α,16β,24(S)-tetrol (24-O-acetyl)- 3-O-α-
-rhamnopyranosyl-(1→2)-(6′-O-acetyl)-β-
-glucopyranoside (4). Compounds 2 and 3 showed to stimulate the proliferation of mouse splenocytes and were not significantly cytotoxic. 相似文献
14.
Bioassay-guided fractionation of the n-BuOH extract of the roots of Clematis argentilucida led to the isolation of two new triterpenoid saponins along with a known one, cussonside B (3). By extensive spectral analysis and chemical evidences, the structures of the two new saponins were determined to be 3β-O-[β-D-ribopyranosyl-(1→3)-α-L-rhamnopyranosyl-(1→2)-α-L-arabinopyranosyl] hederagenin-11,13-dien-28-oic acid (1) and 3β-O-{β-D-ribopyranosyl-(1→3)-α-L-rhamnopyranosyl-(1→2)-[β-D-glucopyranosyl-(1→4)]-β-D-xylopyranosyl} oleanolic acid (2), respectively. Saponin 1 is the first example of triterpenoid saponins with two double bonds located at C-11 and C-13 in the aglycone from the genus Clematis. The two new saponins exhibited significant cytotoxicity against human leukemia HL-60 cell lines, human hepatocellular carcinoma Hep-G2 cell lines and human glioblastoma U251MG cell lines with a range of IC(50) values from 2.74 to 25.40μM, while 3 showed inactivity against all of the three cancer cell lines. 相似文献
15.
A new triterpene glycoside (1) along with the known intercedenside B (2) was isolated from the sea cucumber Pseudocolochirus violaceus. Glycoside 1 was elucidated as 3-O-{6-O-sodiumsulfate-3-O-methyl-beta-D-glucopyranosyl-(1-->3)-beta-D-xylopyranosyl-(1-->4)-[beta-D-xylopyranosyl(1-->2)]-beta-D-quinovopyranosyl-(1-->2)-4-O-sodiumsulfate-beta-D-xylopyranosyl}-16beta-acetoxy-holosta-7, 24-diene-3beta-ol on the basis of extensive spectral studies and chemical evidence. Both the glycosides exhibited significant cytotoxicity against cancer cell lines MKN-45 and HCT-116. 相似文献
16.
A new triterpenoid, 1α,7α-diacetoxyapotirucall-14-ene-3α,21,22,24,25-pentaol (1), and the two known compounds odoratone (2) and 2β,3β,4β-trihydroxypregnan-16-one (3) were isolated from a methanolic extract of the seed kernels of Azadirachta indica. Their structures were elucidated on the basis of spectral methods. 相似文献
17.
桉树害虫油桐尺蛾林间防治试验 总被引：2，自引：1，他引：1
对桉树害虫油桐尺蛾幼虫进行林间药剂防治试验,结果表明:使用单剂生物药剂0.6%阿维菌素水剂4 000倍液、16 000 IU.mg-1苏云金杆菌粉剂1 000倍液喷雾防治幼虫,10 d后的防治效果达89%~97%;使用混合化学药剂A3B3C3、A2B2C3和A1B3C3这3种组合喷雾防治油桐尺蛾幼虫,7 d后的防治效果达84%以上;使用混合生物药剂a1b1c2、a1b3c3和a1b1c1这3种组合喷雾防治油桐尺蛾幼虫,10 d后的防治效果达80%~96%;使用烟雾剂柴油5 kg+20%氰戊菊酯乳油0.375 kg、柴油5 kg+20%氰戊菊酯乳油0.25 kg、柴油5 kg+20%氰戊菊酯乳油0.125 kg喷雾防治幼虫,7 d后的防治效果达89%以上。 相似文献
18.
An investigation of Agave americana and Agave barbadensis resulted in the isolation of a new homoisoflavanoid, 7-hydroxy-3-(4-methoxybenzyl)-chroman (3), together with known compounds 7-hydroxy-3-(4-methoxybenzyl)-chroman-4-one (1), 5,7-dihydroxy-3-(4-methoxybenzyl)-chroman-4-one (2), cantalasaponin-1 (4), and 2-hydroxy-butanedioic acid-1-methyl ester (5). 相似文献
19.
银杏,杉木,杨树叶中磷脂酰甘油分子种的高效液相色谱分析 总被引：2，自引：0，他引：2
用高效液相色谱分析方法，在碳十八柱上，以乙腈－异丙醇为流动相，分析了银杏、杉木、杨树叶中磷脂酰甘油的分子种组成。分析采用磷脂酰甘油经磷脂酶Ｃ水解后，用３，５－二硝基苯甲酰氯衍生，再进行高效液相色谱分离的方法。分子种根据文献的相对保留值、标样的实验保留值、分析样ＨＰＬＣ峰的脂肪酸组成分析而确定。分析结果表明，三种林木叶中磷脂酰甘油均主要由八个分子种组成，在八个分子种的相对含量上，树种间存在明显差异。 相似文献
20.
A new acylated quercetin glycoside and other secondary metabolites from Helleborus foetidus 总被引：1，自引：0，他引：1
A new acylated flavonol glycoside, quercetin 3-O-(2-trans-caffeoyl)-alpha-L-arabinopyranosyl-(1-->2)-beta-D-glucopyranoside (1), together with the known 25R,26-[(beta-D-glucopyranosyl)oxy]-22alpha-hydroxy-5beta-furostan-3-beta-yl O-alpha-l-rhamnopyranosyl-(1-->4)-beta-D-glucopyranoside (2), anemonin (3), beta-D-glucosyl-p-hydroxyphenylethyl alcohol (4), and 1-beta-O-caffeoyl-D-glucose (5) were isolated from Helleborus foetidus leaves and identified on the basis of detailed spectral analysis. 相似文献