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1.
Twenty‐eight compounds including seven alkaloids, (+)‐3‐chloro‐N‐formylnornantenine ( 1 ), (+)‐N‐formylnornantenine ( 2 ), (+)‐boldine ( 3 ), (+)‐norboldine ( 4 ), (‐)‐norboldine ( 5 ), lycicamine ( 6 ), and tetrahydroberberine ( 7 ); four flavonoids, kaempferol ( 8 ), kaempferol‐3‐O‐arabinoside ( 9 ), quercetin ( 10 ), and quercetin‐3‐O‐rhamnoside ( 11 ); one butanolide, akolactone A ( 12 ); one p‐quinone, 2,6‐dimethoxy‐p‐quinone ( 13 ); one cyclohex‐2‐en‐1‐one, blumenol A ( 14 ); six benzenoids, methylparaben ( 15 ), p‐hydroxybenzoic acid ( 16 ), vanillic acid ( 17 ), syringic acid ( 18 ), 3,4,5‐trimethoxybenzoic acid ( 19 ), and 3‐(3,4‐dihydroxyphenyl) propionic acid ( 20 ); one diterpene, phytol ( 21 ); one triterpene, squalene ( 22 ); six steroids, (3‐sitosterol ( 23 ), β‐sitostenone ( 24 ), stigmasta‐4,22‐dien‐3‐one ( 25 ), 6β‐hydroxy‐β‐sitostenone ( 26 ), 6β‐hydroxystigmasterone ( 27 ), and β‐sitosteryl‐D‐glucoside ( 28 ) were isolated from the aerial part of Lindera glauca. These compounds were characterized and identified by physical and spectral method. All compounds were isolated for the first time from this plant. Among them, (+)‐3‐chloro‐N‐formylnornantenine ( 1 ) is a new one. 相似文献
2.
Two New Compounds from Lindera chunii Merr. 总被引:1,自引:0,他引:1
Mian ZHANG Chao Feng ZHANG Qi Shi SUN Zheng Tao WANG 《中国化学快报》2006,17(10):1325-1327
The root of Lindera chunii Merr. is a noble traditional Chinese medicine and frequently used as a substitute for L. aggregata to cure the chronic disease of rheumatoid arthritis1. In our previous paper, we have reported some components from the roots of L… 相似文献
3.
AliH. Merili Sevda Prldar Sevda Süzge Leyla Biti Filiz Merili Hasan
zelik Josef Zapp Hans Becker 《Helvetica chimica acta》2006,89(2):210-217
From the aerial parts of Aconitum cochleare Woroschin, two new norditerpenoid alkaloids named aconitilearine ( 1 ) and N‐deethylmethyllycaconitine ( 2 ) were isolated along with the eight known norditerpenoid alkaloids 3 – 10 . The structures for the new compounds were established on the basis of 1H, 13C, DEPT, homonuclear 1H,1H‐COSY, NOESY, HSQC, and HMBC NMR studies. 相似文献
4.
Bin Xu Jiehua Xue Junjie Tan Shanhao Jiang Fujiang Guo Yiming Li 《Helvetica chimica acta》2014,97(5):727-732
Two new alkaloids, ranaconidine (=20‐ethyl‐1α,14α,16β‐trimethoxyaconitane‐4,7,8,10‐tetrol; 1 ) and N‐(chloromethyl)taspine (=1‐[2‐(N‐(chloromethyl)‐N,N‐dimethylaminium)ethyl]‐3,8‐dimethoxybenzopyrano[5,4,3‐cde]benzopyran‐5,10‐dione; 2 ), together with two known compounds, i.e., benzethonium chloride ( 3 ) and ranaconine ( 4 ) were isolated from the roots of Aconitum sinomontanum Nakai . The structures of the compounds were elucidated on the basis of spectral evidences and in the comparison with previously published data. 相似文献
5.
Lin Li Hong‐Ping He Ying‐Tong Di Jun‐Mian Tian Xiao‐Jiang Hao 《Helvetica chimica acta》2006,89(7):1457-1462
Two new pentacyclic alkaloids, daphnilongertone ( 1 ) and 11‐hydroxydaphnigracine ( 2 ), together with the known congener dehydrodaphnigracine ( 3 ), were isolated from the fruits of Daphniphyllum longeracemosum. Their structures were elucidated spectroscopically. Compound 3 was isolated for the first time as a natural product. 相似文献
6.
Bin Ma Chun‐Fu Wu Jing‐Yu Yang Rui Wang Yoshihiro Kano Dan Yuan 《Helvetica chimica acta》2009,92(8):1575-1585
Three new alkaloids, 2′‐O‐β‐D ‐glucopyranosyl‐11‐hydroxyvincoside lactam ( 1 ), 22‐O‐demethyl‐22‐O‐β‐D ‐glucopyranosylisocorynoxeine ( 2 ), and (4S)‐corynoxeine N‐oxide ( 3 ) were isolated from the leaves of Uncaria rhynchophylla, together with four known tetracyclic oxindole or indole alkaloids, isocorynoxeine N‐oxide ( 4 ), rhynchophylline N‐oxide ( 5 ), isorhynchophylline N‐oxide ( 6 ), and dihydrocorynantheine ( 7 ), and an indole alkaloid glycoside, strictosidine ( 8 ). The structures of 1 – 3 were elucidated by spectroscopic methods including UV, IR, ESI‐TOF‐MS, 1D‐ and 2D‐NMR, as well as CD experiments. The activity assay showed that 8 (IC50=8.3 μM ) exhibited potent inhibitory activity on lipopolysaccharide(LPS)‐induced nitrogen monoxide (NO) release in N9 microglia cells. However, only weak inhibitory activities were observed for 1 – 7 (IC50>100 μM for 1 – 6 or >30 μM for 7 ). 相似文献
7.
Won Se Suh Ki Hyun Kim Ho Kyung Kim Sang Un Choi Kang Ro Lee 《Helvetica chimica acta》2015,98(8):1087-1094
Two new aryl‐tetralin lignan glycosides, linderanosides A and B ( 1 and 2 , resp.), and a new dihydrobenzofuran neolignan glycoside, linderanoside C ( 3 ), together with five known lignan derivatives ( 4 – 8 ) were isolated from the trunk of Lindera glauca. The structures of these new compounds were determined through spectroscopic analyses, including extensive 2D‐NMR data and acid hydrolysis. The absolute configurations of the compounds were clarified by circular dichroism (CD) spectroscopic studies. Compounds 1 – 8 were evaluated for their cytotoxicity against A549 (non‐small cell lung adenocarcinoma), SK‐OV‐3 (ovarian cancer cells), A498 (human kidney epithelial cells), and HCT‐15 (colon cancer cells) human tumor cell lines using sulforhodamine B assays in vitro. 相似文献
8.
Two new lycodine‐type alkaloids, huperzinine N‐oxide ( 1 ) and 8,15‐dihydrohuperzinine ( 2 ) as well as five known compounds, huperzinine ( 3 ), huperzine B ( 4 ), huperzine D ( 5 ), N‐demethylhuperzinine ( 6 ), and β‐obscurine ( 7 ), were isolated from the club moss Lycopodium casuarinoides. The structures of 1 and 2 were elucidated by spectroscopic methods and chemical transformation. The absolute configuration of 1 was established by chemical correlation with 3 , and that of 2 was determined by its CD spectrum. 相似文献
9.
Xin‐Gang Cui Qing‐Jie Zhao Qiao‐Ling Chen Lei Xu Yan Song Yong‐Sheng Jin Dan‐Feng Xu 《Helvetica chimica acta》2008,91(1):155-158
Two new benzophenanthridine alkaloids, named 8‐methoxysanguinarine ( 1 ) and 8‐methoxyisodecarine ( 2 ), were isolated from the EtOH extract of the rhizoma of Zanthoxylum nitidum. Their structures were determined on the basis of spectroscopic analysis. 相似文献
10.
Two new Lycopodium alkaloids, (+)‐cermizine D N‐oxide ( 1 ) and (8β)‐8‐(acetyloxy)obscurumine A ( 2 ), along with five known compounds, were isolated from the crude alkaloid portion of Lycopodium obscurum. Their structures were elucidated on the basis of spectroscopic data and chemical correlation. All of these alkaloids were tested in an assay for acetylcholine esterase (AChE) inhibitory activity. 相似文献
11.
Du‐Qiang Luo Wen‐Liang Zhu Xiao‐Long Yang Shu‐Juan Liang Zhi‐Ran Cao 《Helvetica chimica acta》2010,93(6):1209-1215
Two new daphniphyllum alkaloids named 2‐hydroxyyunnandaphnine D ( 1 ) and methyl 7‐hydroxyhomodaphniphyllate ( 2 ), together with eight known alkaloids, daphnioldhanin D, calyciphylline F, calyciphylline B, deoxycalyciphylline B, daphnicyclidin H, macropodumine C, 9,10‐epoxycalycine A, and yunnandaphnine A, were isolated from the stems and leaves of Daphniphyllum calycinum. Their structures and relative configurations were established on the basis of spectral evidence (including 2D‐NMR) and subsequently confirmed by a single‐crystal X‐ray crystallographic diffraction analysis. 相似文献
12.
Bin Wang Wei‐Dong Zhang Yun‐Heng Shen Jian Tang Chuan Zhang Run‐hui Liu Min Lin Hui‐Liang Li 《Helvetica chimica acta》2008,91(2):244-248
Phytochemical studies on Veratrum nigrum L., collected in Shanxi, P. R. China, resulted in the isolation of two new steroidal alkaloids, 23‐methoxycyclopamine ( 1 ) and 15‐O‐(2‐methylbutanoyl)‐3‐O‐veratroylprotoverine ( 2 ). The structures of the two new compounds were established by means of extensive NMR spectroscopic studies. 相似文献
13.
Chang‐Xin Zhou Xue‐Yao Wang Jian‐Xia Mo Jian Zhang Li‐She Gan 《Helvetica chimica acta》2011,94(2):347-354
Two new indolizidine alkaloids, (±)‐3‐oxoisoelaeocarpine ( 1 ) and (±)‐elaeocarpine N‐oxide ( 2 ), along with three known alkaloids, (±)‐isoelaeocarpine ( 3 ), (±)‐elaeocarpine ( 4 ), and (?)‐isoelaeocarpiline ( 5 ), were isolated from an EtOH extract of the branches and leaves of Elaeocarpus sphaericus. The structures of these compounds were determined by spectroscopic and chemical methods. Furthermore, enantiomers of compounds 1 and 3 were separated on a chiral CD‐Ph column, and their absolute configurations were determined by TD‐DFT (=time‐dependent density‐functional theory) quantum‐chemical calculations of their electronic circular dichroism (ECD) spectra. 相似文献
14.
Two new alkaloids, sessilifolines A ( 1 ) and B ( 2a ), were isolated from the stems of Stemona sessilifolia, together with three known alkaloids, tuberstemonine ( 3 ), sessilifoliamide A ( 4 ), and stemoninoamide ( 5 ). Their structures were established by mass‐spectrometric and spectroscopic methods, especially 2D‐NMR techniques. 相似文献
15.
A New Sesquiterpene from the Roots of Lindera strychnifolia 总被引:2,自引:0,他引:2
Jian Bei LI Yi DING* Wei Min LI Institute of Materia Medica Chinese Academy of Medical Sciences Beijing Guangzhou University of Traditional Chinese Medicine Guangzhou 《中国化学快报》2002,13(10)
The root of Lindera strychnifolia is used as a palliative and an antispasmodic in traditional chinese medicine. In previous studies of chemical constituents from this plant, more than 20 sesquiterpene lactones have been isolated and their structures were established1-7. In order to compare the difference of chemical constituents extracted by Supercritical Fluid Extraction (SFE) method and by organic solvent, the SFE extract from Lindera strychnifolia was investigated. A novel sesquiterp… 相似文献
16.
Jun‐Ju Xu Da‐Ke Zhao Hong‐Lian Ai Li‐Mei Zhang Shi‐Qing Xie Shu‐Hui Zi Sheng‐Chao Yang Yong Shen 《Helvetica chimica acta》2013,96(11):2155-2159
A further study of the alkaloid constituents of Aconitum forrestii led to the isolation of three new C19‐diterpenoid alkaloids, named 14‐acetoxy‐8‐O‐methylsachaconitine ( 1 ), 14‐acetoxyscaconine ( 2 ), and 8‐O‐ethylcammaconine ( 3 ). Their structures were determined by UV, IR, and MS, 1D‐ and 2D‐NMR analyses. 相似文献
17.
Yun Sun Jin‐Xiong Chen Lin Zhou Jia Su Yan Li Ming‐Hua Qiu 《Helvetica chimica acta》2012,95(7):1114-1120
Three new alkaloids, 3‐O‐acetylveralkamine ( 1 ), veralkamine 3‐(β‐D ‐glucopyranoside) ( 2 ), and 6,7‐epoxyverdine ( 3 ), together with five known alkaloids, veramitaline, veralkamine ( 4 ), angeloylzygadenine, veratroylzygadenine, and veramiline 3‐(β‐D ‐glucopyranoside), were isolated from the whole plants of Veratrum taliense. Their structures were elucidated on the basis of spectroscopic analysis, and the NMR data of veralkamine ( 4 ) are given for the first time. In addition, the cytotoxic activities of all isolated compounds, except for veramitaline, were tested. 相似文献
18.
Guo‐Cai Wang Ying Wang Qian Li Jie‐Ping Liang Xiao‐Qi Zhang Xin‐Sheng Yao Wen‐Cai Ye 《Helvetica chimica acta》2008,91(6):1124-1129
Two new securinega‐type alkaloids and four known ones were isolated from the twigs and leaves of Flueggea virosa. The structures of the new compounds were elucidated by means of spectroscopic methods (UV, IR, HR‐ESI‐MS, and 1D‐ and 2D‐NMR), and the absolute configurations were assigned by CD spectra. The structures of the known compounds were identified by comparison of their physical and spectroscopic data with those reported in the literature. 相似文献
19.
Shuang Liang Hai‐Sheng Chen Yun‐Heng Shen Wei‐Dong Zhang Yong‐Sheng Jin Run‐Hui Liu 《Helvetica chimica acta》2008,91(2):239-243
The three new monoterpenoid indole alkaloids 1 – 3 were isolated from the stems of Ervatamia flabelliformis. The structures were elucidated on the basis of spectral analysis and chemical derivatization. 相似文献
20.
Two new nitrone alkaloids were isolated from the whole plant of Huperzia serrata (Thunb .) Trev . They are both phlegmarine‐type lycopodium alkaloids with a nitrone moiety. Their structures were elucidated on the basis of spectral evidences, and their configurations were established on the basis of optical rotation, CD, and NOESY‐NMR data. 相似文献