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1.
Two new diarylheptanoids, designated muricarpones A and B, together with three known diarylheptanoids, 1,7-di-(3',4'-dihydroxyphenyl)-4-hepten-3-one, 1-(3',4'-dihydroxyphenyl)-7-(4'-hydroxyphenyl)-4-hepten-3-one, and 1,7-bis(p-hydroxyphenyl)-4-hepten-3-one, were isolated from the rhizomes of Amomum muricarpum ELMER (Zingiberaceae). Their structures were determined using spectroscopic analyses. 相似文献
2.
Siddiqui IN Ahmad VU Zahoor A Ahmed A Khan SS Khan A Hassan Z 《Natural product communications》2010,5(11):1787-1788
Two new diarylheptanoids, trivially named nitidone A and nitidone B, have been isolated from Alnus nitida. The structure elucidation of the compounds was based primarily on 2D-NMR spectroscopic techniques and by comparison with literature data. 相似文献
3.
Four new diarylheptanoids from the roots of Juglans mandshurica 总被引:10,自引:0,他引:10
Li G Xu ML Choi HG Lee SH Jahng YD Lee CS Moon DC Woo MH Son JK 《Chemical & pharmaceutical bulletin》2003,51(3):262-264
Four new diarylheptanoids (1-4), along with two known tetralones (5, 6), were isolated from the roots of Juglans mandshurica and their structures were elucidated on the basis of spectroscopic studies. 相似文献
4.
Mei Jin Shengbao Diao Changhao Zhang Shuo Cao Jinfeng Sun Ren Li 《Natural product research》2015,29(19):1839-1844
Two new diarylheptanoids, ( ? )-threo-3′,4″-epoxy-1-(4-hydroxyphenyl)-7-(3-methoxyphenyl)heptan-2,3-diol (1) and (1α,3β,5α,6α)-1,5-epoxy-3,6-dihydroxy-1,7-bis(3-methoxy-4-hydroxy-phenyl)-heptane (2), along with one known diarylheptanoid, rhoiptelol B (3), were isolated from the roots of Juglans mandshurica. The structures of compounds 1 and 2 were identified based on HR-ESI-MS, 1D and 2D NMR including 1H–1H COSY, HMQC, HMBC and NOESY spectroscopic methods. 相似文献
5.
Two new cyclic diarylheptanoids named ostryopsitrienol(1) and ostryopsitriol(2),together with six known compounds,were isolated from the stems of endemic medicinal plant of Ostryopsis nobilis (Betulaceae).The structures of the new compounds were elucidated by means of HRMS,~1D NMR,~2D NMR and X-ray crystallography analysis. 相似文献
6.
Three new diarylheptanoids and their antioxidant property 总被引:2,自引:0,他引:2
Chang Xin Zhou Xiang Yi Zhang Xiao Wu Dong Qiao Feng Tao Hui Dou Rong Ping Zhang Ke Xin Huang Xiao Kun Li Chang Xiang Chen Su Zeng Yu Zhao 《中国化学快报》2007,18(10):1243-1246
Three new diarylheptanoids,i.e.,sodium(5S,2E)-1,7-bis(4-hydroxyphenyl)-1-hydroxy-2-hepten-5-sulfonate(1), sodium(5R,2E)-1,7-bis(4-hydroxyphenyl)-1-hydroxy-2-hepten-5-sulfonate (2) and 3,5-diacetoxy-1-(3-methoxy-4,5-dihydroxy- phenyl)-7-(4-hydroxy-3-methoxyphenyl)heptane (3) were isolated from the rhizomes of Zingiber officinale.The structures of the new compounds were elucidated on the basis of spectroscopic methods.The antioxidant activities of 3 were assayed by in vitro models involving DPPH free radicals and superoxide anion radicals. 相似文献
7.
Jun Xi Liu Duo Long Di Xin Yi Huang Chen Li 《中国化学快报》2007,18(8):943-946
Two new cyclic diarylheptanoids juglanin A (1) and juglanin B (2) were isolated from the pericarps of Juglans regia L. Their structures were elucidated by various spectroscopic methods including 2D NMR techniques (COSY, HMQC, HMBC, NOESY) and HR-ESIMS. 相似文献
8.
Three new diarylheptanoids, called alpinnanins A-C (1-3), together with two known chalcones, 2',4'-dihydroxy-6'-methoxychalcone and 4',6'-dimethylchalconaringenin, two known flavanones, alpinetin and naringenin 5-O-methyl ether, a known diarylheptanoid, (3S,5S)-trans-3,5-dihydroxy-1,7-diphenyl-1-heptene, stigmasterol and beta-sitosterol as a mixture, and beta-sitosterol 3-O-beta-D-glucopyranoside were isolated from the rhizomes of Alpinia pinnanensis T. L. WU et SENJEN (Zingiberaceae). Their structures were elucidated by spectroscopic analyses. 相似文献
9.
The two new diarylheptanoids, cymodienol (1), and cymodiene (2), obtained from specimens of the sea grass Cymodocea nodosa, collected from the coastal areas of central Greece, are the first members of this class isolated from marine organisms. The chemical structures of the two metabolites were assigned on the basis of their NMR and MS spectroscopic data, including information obtained by 1D- and 2D-NMR experiments. Metabolite 2 possesses an unprecedented skeleton that might be biosynthetically related to metabolite 1. Cymodienol (1) was found to exhibit significant cytotoxic activity against two lung cancer cell lines. 相似文献
10.
Kuroyanagi M Shimomae M Nagashima Y Muto N Okuda T Kawahara N Nakane T Sano T 《Chemical & pharmaceutical bulletin》2005,53(12):1519-1523
In the course of research on the bioactive constituents of woody plants in the Cyugoku area of Japan, a methanol extract of the leaves of Alnus japonica were found to have strong antioxidative activity. Ethyl acetate soluble and n-buthanol soluble fractions of the methanol extract had a potent antioxidative effect. Both fractions were purified by silica gel column chromatography and HPLC using an ODS column to give four new diarylheptanoids along with known diarylheptanoids and flavonoids. These new compounds were elucidated to be 7-(3,4-dihydroxyphenyl)-5-hydroxy-1-(4-hydroxyphenyl)-3-heptanone-5-O-beta-D-xylopyranoside (1), 1-(3,4-dihydroxyphenyl)-5-hydroxy-7-(4-hydroxyphenyl)-3-heptanone-5-O-beta-D-xylopyranoside (2), 1,7-bis-(3,4-dihydroxyphenyl)-5-hydroxy-3-heptanone-5-O-[2-(2-methylbutenoyl)]-beta-D-xylopyranoside (3) and 1,7-bis-(3,4-dihydroxyphenyl)-5-methoxy-3-heptanone (4) using spectral methods and especially 1H-, 13C-NMR and 2D-NMR measurements. The isolated compounds including their main constituent, oregonin (5), were tested for antioxidative activity. Some of these compounds having two catechol structures showed potent antioxidative activity. Compounds having one catechol structure showed moderate antioxidative activity, but a peracetate of 5 having no catechol structure exhibited no antioxidative activity. Thus the catechol structure of the diarylheptanoids is indispensable for antioxidative activity. 相似文献
11.
A new flavone, 6, 2?-dihydroxy-5, 7, 8, 6?-tetramethoxyflavone, was isolated from the roots of Scutellaria baicalensis. Its structure was established on the basis of spectral evidences. 相似文献
12.
One new flavonoid, 5,6,7-trimethoxyflavone-8-O-β-d-glucopyranoside (1), along with six known compounds 2–7, was isolated from Oroxylum indicum. Their structures were determined on the basis of spectral data. The antibacterial activities of compounds 1–4 were studied. Compounds 1 and 3 showed medium antibacterial activity against Staphylococcus aureus with MIC/MBC at 32–128 μg/ml. 相似文献
13.
One new saponin named davuricoside N (1) was isolated from the whole plants of Lysimachia davurica, the structure was determined by 1D and 2D NMR, ESI-MS techniques, and chemical methods. 相似文献
14.
Costantino V Fattorusso E Mangoni A Perinu C Teta R Panza E Ianaro A 《The Journal of organic chemistry》2012,77(15):6377-6383
Ring strain causes planar chirality in tedarenes A and B, two cyclic diarylheptanoids isolated from the marine sponge Tedania ignis. In both molecules, the chiral plane is an olefinic system, which is very rare among natural products. In tedarene A (1), interconversion is too fast to allow isolation of the enantiomeric atropisomers but still slow enough to cause coalescence of some (1)H and (13)C NMR signals at room temperature. In tedarene B (2), which also shows stable central and axial chirality, the two planar diastereomers are in slow equilibrium. Tedarene B is the smallest natural product with central, axial, and planar chirality in the same simple molecule. The identification of planar chirality as the difference between its conformational isomers allowed the use of theoretical prediction of the CD spectrum to determine the absolute configuration of the stereogenic carbon C-9 as well as of the biphenyl chiral axis. 相似文献
15.
Yan Li Alfonso Mangoni Oleksandr Shulha Serhat Sezai Çiçek Christian Zidorn 《Tetrahedron letters》2019,60(32):150930
A first phytochemical investigation of apolar natural products of the seagrass Zostera marina L. (Zosteraceae) yielded cymodienol, a cyclic diarylheptanoid so far only known from the seagrass Cymodocea nodosa (Ucria) Asch. (Cymodoceaceae) and a previously undescribed diaryheptanoid, isotedearene A, which is closely related to tedarene A, a natural product previously described from the neotropic sponge Tedania ignis (Duchassaing & Michelotti, 1864) (Tedaniidae). Structures were established by mass spectrometry and extensive 1D and 2D NMR experiments. 相似文献
16.
17.
One new cycloartane triterpene glycoside (1) was isolated from the whole plant of Beesia calthaefolia. Its structure was elucidated on the basis of extensive spectroscopic data analysis. Its inhibitory effect was measured by the classical pathway of the complement system, and compared with those of known related cycloartane glycosides 2 and 3, previously isolated by us from the same plant. Compounds 1 and 2 exhibited inhibitory activity of complement system with IC50 of 395.3 and 214 μM, respectively. The results suggested that OH at C-12, C-18 and C-15 along with the polarity could affect the inhibitory activity. 相似文献
18.
Jun Zhao Hao Wu Ke Xin Huang Shu Yun Shi Hua Peng Xian Feng Sun Liu Rong Chen Qun Xiong Zheng Qi Jun Zhang Xiao Jiang Hao Joachim St ckigt Xiao Kun Li Yu Zhao Jia Qu 《中国化学快报》2008,19(11):1319-1322
Three new compounds, including one chloro-furoeremophilanoid (1), one eremophiladiolide (2), a rare dimer of nor- furoeremophilanoid, ligulatrovine A (3), and a known furoeremophilanolide (4), were isolated from Ligularia atroviolacea. The structures of compounds 1-4 were elucidated by spectroscopic methods including 1D and 2D NMR experiments as well as X- ray diffraction study. 相似文献
19.
Wei-Mao Zhong Zhao-Meng Cui Zhi-Ke Liu Yan Yang Da-Rong Wu Shao-Hua Liu Hui Long Han-Dong Sun Yong-Jun Dang Wei-Lie Xiao 《中国化学快报》2015,26(8):1000-1003
Phytochemical investigation of the aerial parts of Leonurus japonicus led to the isolation of one new labdane diterpenoid, leojaponin D(1) and two new ionone derivatives, leojaponones A and B(2 and 3),together with seven known diterpenoids(4–10). Their structures were elucidated by extensive 1D and2 D NMR spectroscopic data and by comparison with data reported in the literature. Selected isolates were evaluated their effects on Jurkat IL2 secretion. 相似文献
20.
应用高速逆流色谱法(HSCCC)分离纯化了高良姜中3种二苯基庚烷类化合物。以正己烷-乙酸乙酯-甲醇-水(2:3:1.75:1, v/v/v/v)为两相溶剂系统,下相为固定相,上相为流动相,在主机转速为858 r/min、流速1.5 mL/min的条件下,从122.20 mg高良姜石油醚萃取物中经一步HSCCC分离可制备得到5R-羟基-7-(4-羟基-3-甲氧基苯基)-1-苯基-3-庚酮(7.37 mg)、7-(4-羟基-3-甲氧基苯基)-1-苯基-4E-烯-3-庚酮(9.11 mg)和1,7-二苯基-4E-烯-3-庚酮(15.44 mg),经高效液相色谱分析,纯度均大于93%,各化合物的结构由质谱和核磁共振氢谱、碳谱鉴定确证。该方法简便、快速、高效,可用于高良姜中二苯基庚烷类化合物的快速分离制备。 相似文献