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Gnapholide: A New Guaiac-Dimer from Pulicaria Gnaphalodes (Asteraceae) 银掌内酯:一种新的愈创木二聚体
Natural Product Letters Pub Date : 2002-01-01 DOI: 10.1080/10575630290004260
M. Ali, Muhammad Jahangir, Syed Shah Uzair, Ayman Wahba Erian, Rasool Bakhsh Tareen
{"title":"Gnapholide: A New Guaiac-Dimer from Pulicaria Gnaphalodes (Asteraceae)","authors":"M. Ali, Muhammad Jahangir, Syed Shah Uzair, Ayman Wahba Erian, Rasool Bakhsh Tareen","doi":"10.1080/10575630290004260","DOIUrl":"https://doi.org/10.1080/10575630290004260","url":null,"abstract":"The ethyl acetate soluble part of the chloroform extract of Pulicaria gnaphalodes belonging to the family Asteraceae afforded a new sesquiterpene-dimer of guaiane class named as gnapholide and anabsinthin of the same skeleton. The structures of both the compounds were elucidated with the aid of spectroscopic techniques including 2D NMR.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"23 1","pages":"179 - 186"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82527588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Further Sesquiterpenes from Polygonum Viscosum (Polygonaceae)
Natural Product Letters Pub Date : 2002-01-01 DOI: 10.1080/10575630290004206
B. Datta, S. Datta, M. Rashid, J. Kundu, C. Hasan, S. Sarker
{"title":"Further Sesquiterpenes from Polygonum Viscosum (Polygonaceae)","authors":"B. Datta, S. Datta, M. Rashid, J. Kundu, C. Hasan, S. Sarker","doi":"10.1080/10575630290004206","DOIUrl":"https://doi.org/10.1080/10575630290004206","url":null,"abstract":"Two new sesquiterpenes, 4-methoxycarbonyl-7-(1-methylethyl)-6-oxo-3,3a,7,8,8a-pentahydroazulene-1-carboxylic acid (viscoazusone) and 1,4-dimethoxy-carbonyl-7-(1-methylethyl)-6-oxo-3,3a,7,8,8a-pentahydroazulene (viscoazulone), were isolated from the whole plant of Polygonum viscosum . The structures of these compounds were determined by spectroscopic means.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"3 1","pages":"143 - 148"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81965951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
New Cytotoxic Cucurbitacins from the Pericarps of Trichosanthes Tricuspidata Fruits 从Tricuspidata果实果皮中提取新的细胞毒性葫芦素
Natural Product Letters Pub Date : 2002-01-01 DOI: 10.1080/1057563029001/4755
L. P. Mai, D. Guénard, M. Fránck, M. Van Tri, C. Gaspard, T. Sévenet
{"title":"New Cytotoxic Cucurbitacins from the Pericarps of Trichosanthes Tricuspidata Fruits","authors":"L. P. Mai, D. Guénard, M. Fránck, M. Van Tri, C. Gaspard, T. Sévenet","doi":"10.1080/1057563029001/4755","DOIUrl":"https://doi.org/10.1080/1057563029001/4755","url":null,"abstract":"An extract of the fruits of Trichosanthes tricuspidata collected in North Vietnam was found cytotoxic in KB cells. A bioassay-guided fractionation led to the isolation of a series of cucurbitacins of which two are new:tricuspidatin and 2-O-glucocucurbitacin J. Their isolation and structure determination are described.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"29 1","pages":"15 - 19"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83632335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
Coumarin Glycoside from Cissus Sicyoides 香豆素:茜草中的香豆素苷
Natural Product Letters Pub Date : 2002-01-01 DOI: 10.1080/10.575630290015736
F. Beltrame, A. Ferreira, D. Cortez
{"title":"Coumarin Glycoside from Cissus Sicyoides","authors":"F. Beltrame, A. Ferreira, D. Cortez","doi":"10.1080/10.575630290015736","DOIUrl":"https://doi.org/10.1080/10.575630290015736","url":null,"abstract":"From the aerial parts of Cissus sicyoides , a new coumarin glycoside 5,6,7,8-tetrahydroxycoumarin-5 g -xylopyranoside was obtained together with known coumarin sabandin, two flavonoids kaempferol 3-rhamnoside and quercetin 3-rhamnoside and two steroids, sitosterol and 3 g - O - g - d -glucopyranosylsitosterol. The structure of compounds was elucidated by spectral analyses.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"149 1","pages":"213 - 216"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75756058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 31
Licamichauxiioic-A and -B Acids - Two Ent-Kaurene Diterpenoids from Licania Michauxii licamichaxiioi - a和- b酸-两种来自Licania Michauxii的Ent-Kaurene二萜
Natural Product Letters Pub Date : 2002-01-01 DOI: 10.1080/1057563029001/4836
S. Chaudhuri, R. Badisa, E. Pilarinou, E. Walker
{"title":"Licamichauxiioic-A and -B Acids - Two Ent-Kaurene Diterpenoids from Licania Michauxii","authors":"S. Chaudhuri, R. Badisa, E. Pilarinou, E. Walker","doi":"10.1080/1057563029001/4836","DOIUrl":"https://doi.org/10.1080/1057563029001/4836","url":null,"abstract":"Bioassay-guided fractionation allowed the isolation of two new cytotoxic ent-kaurene diterpenoids, licamichauxiioic-A and -B acids (1 and 2) from the root extract of Licania michauxii Prance (Chrysobalanaceae). They were characterized as ent-15-oxo-9(11),16-kauradien-19-oic acid (1) and ent-15-oxo-13(14),16-kauradien-19-oic acid (2) by various spectroscopic methods, in particular, 1D and 2D NMR spectra, and chemical evidence.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"540 1","pages":"39 - 45"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76177904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
Nitrotyrasacutuminine from Menispermum dauricum
Natural Product Letters Pub Date : 2002-01-01 DOI: 10.1080/105756302900042247
B. Yu, Jian-Yong Chen, Tianyou Zhou, K. Cheng, G. Qin
{"title":"Nitrotyrasacutuminine from Menispermum dauricum","authors":"B. Yu, Jian-Yong Chen, Tianyou Zhou, K. Cheng, G. Qin","doi":"10.1080/105756302900042247","DOIUrl":"https://doi.org/10.1080/105756302900042247","url":null,"abstract":"Nitrotyrasacutuminine, an unusual nitrated morphine-type alkaloid was isolated from the roots of Menispermum dauricum . Its structure was determined by various 2D spectra and chemical methods.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"16 1","pages":"155 - 159"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81819754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Composition of Volatile Oil of Primula Obconica in Central China 中国中部报春花挥发油成分研究
Natural Product Letters Pub Date : 2002-01-01 DOI: 10.1080/10575630290020569
P. Nan, S. Peng, Yinhua Zhang, Y. Zhong
{"title":"Composition of Volatile Oil of Primula Obconica in Central China","authors":"P. Nan, S. Peng, Yinhua Zhang, Y. Zhong","doi":"10.1080/10575630290020569","DOIUrl":"https://doi.org/10.1080/10575630290020569","url":null,"abstract":"Primula obconica was introduced to Europe from Hubei, China in 1880, and has been cultivated worldwide as one of popular ornamental plants. The volatile oil of wild P. obconica collected from its original place, Yichang, Hubei was first investigated. A total of 43 compounds constituting 93.49% of the oil were identified by using GC and GC-MS. The major compounds were methyl 2,4-dihydroxy-5-methyl benzoate (30.41%), methyl 2,6-dihydroxy-4-methyl benzoate (29.27%), and hypnone (8.92%) etc. In comparison with the published data of some European cultivars, the native P. obconica seems to be allergen-free due to absence of primin and miconidin.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"63 1","pages":"249 - 253"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86896817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 20
Structure Elucidation of a Novel Funicone-Like Compound Produced by Penicillium Pinophilum 嗜红青霉菌产生的一种新型真菌类化合物的结构解析
Natural Product Letters Pub Date : 2002-01-01 DOI: 10.1080/10575630290013954
S. De Stefano, R. Nicoletti, Salvatore Zambardino, A. Milone
{"title":"Structure Elucidation of a Novel Funicone-Like Compound Produced by Penicillium Pinophilum","authors":"S. De Stefano, R. Nicoletti, Salvatore Zambardino, A. Milone","doi":"10.1080/10575630290013954","DOIUrl":"https://doi.org/10.1080/10575630290013954","url":null,"abstract":"A novel metabolite related to the previously identified compound 3- O -methylfunicone ( 1 ) was isolated from the fungus Penicillium pinophilum and its structure elucidated by spectral analysis as 3- O -methyl-5, 6-epoxyfunicone ( 2 ).","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"4 1","pages":"207 - 211"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88859621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Two New Diprenylated Coumarins from Flindersia Brayleyana 两种新的双戊烯化香豆素
Natural Product Letters Pub Date : 2002-01-01 DOI: 10.1080/10575630290020668
A. S. Moreira, L. Mathias, R. Braz-Filho, J. Schripsema, I. Vieira
{"title":"Two New Diprenylated Coumarins from Flindersia Brayleyana","authors":"A. S. Moreira, L. Mathias, R. Braz-Filho, J. Schripsema, I. Vieira","doi":"10.1080/10575630290020668","DOIUrl":"https://doi.org/10.1080/10575630290020668","url":null,"abstract":"Flindersia brayleyana F. Muell. contains the diprenylated coumarins 1 and 2 , in addition to the known coumarins braylin ( 3 ) and brayleyanin ( 4 ). The structures of the new natural products were elucidated by extensive NMR analysis and mass spectra.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"55 1","pages":"291 - 295"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76017479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Microbial Transformation of Danazol 达那唑的微生物转化
Natural Product Letters Pub Date : 2002-01-01 DOI: 10.1080/10575630290019994
M. Choudhary, Azizuddin, Atta-ur-rahman
{"title":"Microbial Transformation of Danazol","authors":"M. Choudhary, Azizuddin, Atta-ur-rahman","doi":"10.1080/10575630290019994","DOIUrl":"https://doi.org/10.1080/10575630290019994","url":null,"abstract":"Danazol (17 -hydroxy-17 -pregna-2,4-dien-20-yno-[2,3- d ] isoxazole) ( 1 ) on fermentation with Fusarium lini , Aspergillus niger , and Cephalosporium aphidicola yielded 17 -hydroxy-2-(hydroxymethyl)-17- -pregn-4-en-20-yn-3-one ( 2 ) and 17 -hydroxy-2-(hydroxymethyl)-17 -pregna-1,4-dien-20-yn-3-one ( 3 ), while the fermentation of 1 with Bacillus cerus yielded compound 2 only.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"465 1","pages":"101 - 106"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75843719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 22
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