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Homarine, a Common Metabolite in Edible Mediterranean Molluscs: Occurrence, Spectral Data and Revision of a Related Structure 地中海食用软体动物中常见代谢物海碱的存在、光谱数据和相关结构的修正
Natural Product Letters Pub Date : 2001-12-01 DOI: 10.1080/10575630108041311
P. Polychronopoulos, P. Magiatis, A. Skaltsounis, F. Tillequin, E. Vardala-theodorou, A. Tsarbopoulos
{"title":"Homarine, a Common Metabolite in Edible Mediterranean Molluscs: Occurrence, Spectral Data and Revision of a Related Structure","authors":"P. Polychronopoulos, P. Magiatis, A. Skaltsounis, F. Tillequin, E. Vardala-theodorou, A. Tsarbopoulos","doi":"10.1080/10575630108041311","DOIUrl":"https://doi.org/10.1080/10575630108041311","url":null,"abstract":"Abstract Homarine was isolated from nine edible species of marine molluscs belonging to classes Gastropoda, Bivalvia, and Cephalopoda. A thorough chromatographic, NMR and MS study provided evidence that homarine is a common and abundant metabolite of all these species. This study casts doubt on a previous assertion that 1,1′-dimethyl-[2,2′]-bipyridinium is a metabolite of the Bivalve Callista chione.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"346 1","pages":"411 - 418"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78070954","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: 19
A New Oleanane Triterpenoid from Gordonia ceylanica 一种新的齐墩烷三萜
Natural Product Letters Pub Date : 2001-11-01 DOI: 10.1080/10575630108041301
H. Herath, P. Athukoralage, J. Jamie
{"title":"A New Oleanane Triterpenoid from Gordonia ceylanica","authors":"H. Herath, P. Athukoralage, J. Jamie","doi":"10.1080/10575630108041301","DOIUrl":"https://doi.org/10.1080/10575630108041301","url":null,"abstract":"Abstract The chemical investigation of the hexane extract of the stem bark of Gordonia ceylanica afforded 3β-acetoxy-11α(2′.3′-epoxyferulyloxy)-olean-13(18)-ene as a new natural product and α-spinasterol for the first time from Gordonia.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"448 1","pages":"339 - 344"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75812003","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
A New Antibacterial Diterpene from the Roots of Salvia caespitosa 从鼠尾草根中提取一种新的抗菌二萜
Natural Product Letters Pub Date : 2001-11-01 DOI: 10.1080/10575630108041297
A. Ulubelen, S. Öksüz, G. Topçu, A. Gören, C. Bozok-johansson, C. Çelik, G. Kökdil, W. Voelter
{"title":"A New Antibacterial Diterpene from the Roots of Salvia caespitosa","authors":"A. Ulubelen, S. Öksüz, G. Topçu, A. Gören, C. Bozok-johansson, C. Çelik, G. Kökdil, W. Voelter","doi":"10.1080/10575630108041297","DOIUrl":"https://doi.org/10.1080/10575630108041297","url":null,"abstract":"Abstract From the roots of Saliva caespitosa Montbret and Aucher ex. Bentham a new diterpene 6β-hydroxyisopimaric acid (1) has been isolated together with four known diterpenes, one new triterpenoid, 3-acetylvergatic acid (2), as well as five known triterpenoids, two steroids and a flavone. The structures of the compounds were established by spectroscopic analyses. The isolated compounds were tested against standard bacterial strains. Only the new diterpene, 6β-hydroxyisopimaric acid has strong activity (MIC 9μg/ml) against S. aureus and (MIC 18μg/ml) against S. epidermidis as well as against B. subtilis (MIC 9μg/ml).","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"50 1","pages":"307 - 314"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88656975","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: 21
Kramentosan, a New Trinorlignan from the Roots of Krameria tomentosa 克莱门托桑，一种来自克莱门托萨根的新特里诺木聚糖
Natural Product Letters Pub Date : 2001-11-01 DOI: 10.1080/10575630108041299
Sâmia Andrícia Souza da Silva, J. C. Castro, T. G. Silva, Emidio V. Leitão da‐Cunha, J. Barbosa-Filho, M. S. Silva
{"title":"Kramentosan, a New Trinorlignan from the Roots of Krameria tomentosa","authors":"Sâmia Andrícia Souza da Silva, J. C. Castro, T. G. Silva, Emidio V. Leitão da‐Cunha, J. Barbosa-Filho, M. S. Silva","doi":"10.1080/10575630108041299","DOIUrl":"https://doi.org/10.1080/10575630108041299","url":null,"abstract":"Abstract A new phenylcoumarone type trinorlignan, krametosan (1), along with the known norlignans. ratanhiaphenol I (2) and 2-(2′-hydroxy-4′,6′-dimethoxyphenyl)-5-(E)-propenylbenzofuran (3). the lignan conocarpan (4) and dinorlignan decurrenal (5), were isolated from the CHCl3 extract of the roots of Krameria tomentosa. The structure of these compounds were elucidated by the spectroscopic methods.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"29 1","pages":"323 - 329"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85394567","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: 10
A New Cyclobutane Lignan from Cinnamomum balansae 肉桂中一种新的环丁烷木脂素
Natural Product Letters Pub Date : 2001-11-01 DOI: 10.1080/10575630108041300
N. Cuong, W. C. Taylor, T. Sung
{"title":"A New Cyclobutane Lignan from Cinnamomum balansae","authors":"N. Cuong, W. C. Taylor, T. Sung","doi":"10.1080/10575630108041300","DOIUrl":"https://doi.org/10.1080/10575630108041300","url":null,"abstract":"Abstract A new cyclobutane lignan, named cinbalansan (6), was isolated from the leaves of Cinnamomum balansae, along with five known compounds, 1,2-dimethoxy-4-(1-E-propenyl)benzene (1), 1,2-dimethoxy-4-(1-Z-propenyl)benzene (2), 1,2-dimethoxy-4-(2-propenyl)benzene (3), 3,4-dimethoxybenzaldehyde (4), and E-(3,4-dimethoxyphenyl)-2-propenal (5). The structure of cinbalansan was shown to be 1β,2β,3α,4α-1,2-dimethyi-3,4-bis(3,4-dimethoxyphenyl)cyclobutane by a combination of 1H-, 13C-NMR, and NOE- experiments and by direct analysis of the 1H-NMR spectrum by the method of X-application.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"79 1","pages":"331 - 338"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74463754","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: 13
Iridoid and Phenylethanoid Glycosides from Phlomis longifolia var. longifolia 长叶蕨环烯醚萜和苯乙醇苷类
Natural Product Letters Pub Date : 2001-11-01 DOI: 10.1080/10575630108041302
T. Ersöz, W. Schühly, S. Popov, N. Handjieva, O. Sticher, İ. Çalış
{"title":"Iridoid and Phenylethanoid Glycosides from Phlomis longifolia var. longifolia","authors":"T. Ersöz, W. Schühly, S. Popov, N. Handjieva, O. Sticher, İ. Çalış","doi":"10.1080/10575630108041302","DOIUrl":"https://doi.org/10.1080/10575630108041302","url":null,"abstract":"Abstract From the aerial parts of Phlomis longifolia var. longifolia four iridoid glucosides, shanzhiside methyl ester (1), 5-deoxypulchelloside I (2), lamalbide (3), phlomiol (4) and three phenylethanoid glycosides, verbascoside (5), forsythoside B (6). leucosceptoside A (7) along with the caffeic acid ester, chlorogenic acid (8) were isolated. The structures of the isolated compounds were established by spectroscopic (UV, IR, ID- and 2D-NMR, FABMS) and chemical evidence. The structure elucidation of the iridoid compounds 2 and 3 are discussed in detail.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"114 1","pages":"345 - 351"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77532768","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: 14
Editorial board page for “Natural Product Letters”, Volume 15, Number 5 “天然产品通讯”编辑委员会页面，第15卷，第5期
Natural Product Letters Pub Date : 2001-11-01 DOI: 10.1080/10575630108041294
{"title":"Editorial board page for “Natural Product Letters”, Volume 15, Number 5","authors":"","doi":"10.1080/10575630108041294","DOIUrl":"https://doi.org/10.1080/10575630108041294","url":null,"abstract":"Abstract This is a scanned image of the original Editorial Board page(s) for this issue.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"106 1","pages":"a - a"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73430745","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: 0
Cycloartane Triterpenes from Euphorbia tuckeyana
Natural Product Letters Pub Date : 2001-11-01 DOI: 10.1080/10575630108041304
Francis Group, Cycloartane Triterpenes, Jose R. ASCENSOb, Maria-José U. Ferreira
{"title":"Cycloartane Triterpenes from Euphorbia tuckeyana","authors":"Francis Group, Cycloartane Triterpenes, Jose R. ASCENSOb, Maria-José U. Ferreira","doi":"10.1080/10575630108041304","DOIUrl":"https://doi.org/10.1080/10575630108041304","url":null,"abstract":"Abstract Investigation of the acetone extract of the whole plant of Euphorbia tuckeyana afforded a new cycloartane-type triterpene named as cyclotucanol. Its structure was established as cycloartane-24-methylene-3β,25-diol (1). The known cycloartane triterpenes cycloeucalenol (2), 3β-hydroxycycloart-25-en-24-one (3), cycloart-25-ene-3β,24-diol (4), 25,26,27-trisnor-3β-hydroxycycloartan-24-al (5) and cycloart-23-ene-3β,25-diol (6) were also isolated and identified.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"18 1","pages":"363 - 369"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72720581","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: 12
A New Biologically Active Triterpenoid Saponin from the Leaves of Lepidagathis hyalina nees 从透明鳞草叶中提取一种新的生物活性三萜皂苷
Natural Product Letters Pub Date : 2001-11-01 DOI: 10.1080/10575630108041298
R. Yadava
{"title":"A New Biologically Active Triterpenoid Saponin from the Leaves of Lepidagathis hyalina nees","authors":"R. Yadava","doi":"10.1080/10575630108041298","DOIUrl":"https://doi.org/10.1080/10575630108041298","url":null,"abstract":"Abstract A new biologically active triterpenoid saponin m.f. C42H68O13, m.p. 315[ddot]-317°C was isolated from the ethyl acetate soluble fraction of the methanolic extract of the leaves of Lepidagathis hyalina. Its structure was characterized as 3-β-O-[α-L-rhamnopyranosyl(1→4)O-β-D-glucopyranosyl]16-α-hydroxy-olean-12-en(13)-28-oic acid by several spectral and chemical analysis. This new triterpenoid saponin showed antimicrobial activity against various plants pathogenic bacteria and fungi.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"17 1","pages":"315 - 322"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79754108","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
Minor Methylated Pyranoamentoflavones from Calophyllum venulosum
Natural Product Letters Pub Date : 2001-11-01 DOI: 10.1080/10575630108041295
Shuo Cao, K. Sim, S. Goh
{"title":"Minor Methylated Pyranoamentoflavones from Calophyllum venulosum","authors":"Shuo Cao, K. Sim, S. Goh","doi":"10.1080/10575630108041295","DOIUrl":"https://doi.org/10.1080/10575630108041295","url":null,"abstract":"Abstract Two new biflavonoids, pyranoamentoflavone 7-methyl ether (1) and pyranoamentoflavone 4′-methyl ether (2), have been isolated from the leaves of Calophyllum venulosum. The structures of these two new compounds were elucidated by spectroscopic data.","PeriodicalId":18873,"journal":{"name":"Natural Product Letters","volume":"282 1","pages":"291 - 297"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73324993","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: 7
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