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Further studies of Erythrina alkaloids. 赤藓属生物碱的进一步研究。
Lloydia Pub Date : 1977-09-01
I Barakat, A H Jackson, M I Abdulla
{"title":"Further studies of Erythrina alkaloids.","authors":"I Barakat, A H Jackson, M I Abdulla","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":18256,"journal":{"name":"Lloydia","volume":"40 5","pages":"471-5"},"PeriodicalIF":0.0,"publicationDate":"1977-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11292965","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
Triterpenes from the button cactus, Epithelantha micromeris. 三萜从钮扣仙人掌，上皮小分生。
Lloydia Pub Date : 1977-09-01
L G West, J L McLaughlin
{"title":"Triterpenes from the button cactus, Epithelantha micromeris.","authors":"L G West,&nbsp;J L McLaughlin","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Ethanolic extracts of the title plant were toxic to mice. Acid hydrolysis of the toxic extracts permitted the isolation of six crystalline compounds. The known triterpenes oleanolic acid and methyl machaerinate and the common plant sterol, beta-sitosterol, were identified. The structures of two other isolated compounds, named epithelanthic acid and methyl epithelanthate, were postulated to be new delta9(11)-12-oxooleanenes, and another trace compound was incompletely categorized as a triterpene lactone.</p>","PeriodicalId":18256,"journal":{"name":"Lloydia","volume":"40 5","pages":"499-504"},"PeriodicalIF":0.0,"publicationDate":"1977-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12110192","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
Structure elucidation of norlaureline and puterine, new noraporphine alkaloids from Guatteria elata. 去甲萘碱、去甲萘碱、新去甲萘碱生物碱的结构分析。
Lloydia Pub Date : 1977-09-01
C C Hsu, R H Dobberstein, G A Cordell, N R Farnsworth
{"title":"Structure elucidation of norlaureline and puterine, new noraporphine alkaloids from Guatteria elata.","authors":"C C Hsu,&nbsp;R H Dobberstein,&nbsp;G A Cordell,&nbsp;N R Farnsworth","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The structures of norlaureline (1) and puterine (4), new noraporphine alkaloids isolated from Guatteria elata (Annonaceae), were established by interpretation of the optical rotation, uv, ir, pmr, and mass spectral data of their N-acetyl derivatives. Proposed structures were confirmed by transformation of 1 and 4 to laureline (3) and pukateine methyl ether (6), respectively.</p>","PeriodicalId":18256,"journal":{"name":"Lloydia","volume":"40 5","pages":"505-7"},"PeriodicalIF":0.0,"publicationDate":"1977-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12110195","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
Alkaloids of Thalictrum. XXII. Isolation of alkaloids with hypotensive and antimicrobial activity from Thalictrum revolutum. 海芋属生物碱。第二十二。红花中具有降血压和抗菌活性生物碱的分离。
Lloydia Pub Date : 1977-09-01
W N Wu, J L Beal, R W Doskotch
{"title":"Alkaloids of Thalictrum. XXII. Isolation of alkaloids with hypotensive and antimicrobial activity from Thalictrum revolutum.","authors":"W N Wu,&nbsp;J L Beal,&nbsp;R W Doskotch","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Sixteen alkaloids were characterized from Thalictrum revolutum DC., namely; thalidasine, O-methylthalmethine, O-methylthalicberine, thalrugosaminine, thalicarpine, thalmelatine, pennsylvanine, palmatine, berberine, thalifendine, columbamine, jatrorrhizine, deoxythalidastine, thalphenine and magnoflorine. The structure of thairugosaminine (1) a bisbenzylisoquinoline type which was previously proposed on partial data was completely established, including the absolute configuration as S,S. Thalphenine, thalidasine, O-methylthalicberine, thalicarpine, thalrugosaminine and thaliglucinone were found to possess hypotensive activity in rabbits. Thalrugosaminine, thalicarpine, thalmelatine, O-methylthalmethine, pennsylvanine and thalphenine were found to be active against Mycobacterium smegmatis.</p>","PeriodicalId":18256,"journal":{"name":"Lloydia","volume":"40 5","pages":"508-14"},"PeriodicalIF":0.0,"publicationDate":"1977-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11363568","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
Aplysinopsin: antineoplastic tryptophan derivative from the marine sponge Verongia spengelii. 白藜芦醇:从海绵中提取的抗肿瘤色氨酸衍生物。
Lloydia Pub Date : 1977-09-01
K H Hollenbeak, F J Schmitz
{"title":"Aplysinopsin: antineoplastic tryptophan derivative from the marine sponge Verongia spengelii.","authors":"K H Hollenbeak,&nbsp;F J Schmitz","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Bioassay-guided fractionation of the aqueous alcoholic extract of the marine sponge Verongia spengelii for tumor inhibitory agents led to the isolation of aplysinopsin, a new tryptophan derivative recently reported from another sponge Thorecta aplysinopsis. Aplysinopsin showed cytotoxicity against the KB, P388 and L1210 cell cultures.</p>","PeriodicalId":18256,"journal":{"name":"Lloydia","volume":"40 5","pages":"479-81"},"PeriodicalIF":0.0,"publicationDate":"1977-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11765877","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
Cocculitine, a new abnormal Erythrina alkaloid from Cocculus laurifolius. 红球碱:一种新的红球属异常生物碱。
Lloydia Pub Date : 1977-07-01
A N Singh, H Pande, D S Bhakuni
{"title":"Cocculitine, a new abnormal Erythrina alkaloid from Cocculus laurifolius.","authors":"A N Singh,&nbsp;H Pande,&nbsp;D S Bhakuni","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Cocculitine, C18H23NO3, mp 142-143 degrees, [alpha]25D+93 degrees (MeOH), a new abnormal Erythrina alkaloid has been isolated from the leaves of Cocculus laurifolius and has been assigned structure 1 on the basis of spectroscopic studies and chemical correlation.</p>","PeriodicalId":18256,"journal":{"name":"Lloydia","volume":"40 4","pages":"322-5"},"PeriodicalIF":0.0,"publicationDate":"1977-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12079643","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
Alkaloids of Thalictrum. XXI. Isolation and characterization of alkaloids from the roots of Thalictrum podocarpum. 海芋属生物碱。第二十一章。大头菜根中生物碱的分离与鉴定。
Lloydia Pub Date : 1977-07-01
W N Wu, J L Beal, R P Leu, R W Doskotch
{"title":"Alkaloids of Thalictrum. XXI. Isolation and characterization of alkaloids from the roots of Thalictrum podocarpum.","authors":"W N Wu,&nbsp;J L Beal,&nbsp;R P Leu,&nbsp;R W Doskotch","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Thirteen alkaloids, hernandezine, thalidezine, N-desmethylthalidezine, isothalidezine, thalistyline, thalistyline methodiiodide, N-desemethylthalistyline, berberine, columbamine, jatrorrhizine, palmatine, thalifendine, magnoflorine and the artifact, 8-trichloromethyldihydroberberine were isolated from the roots of Thalictrum podocarpum Humb. In addition, oxyberberine and thaliglucinone were obtained in very minor amounts and identified by tlc. Of these compounds, N-desmethylthalidezine and isothalidezine are new bisbenzylisoquinoline alkaloids. Sucrose was isolated from the alcoholic extract. Hernandezine, thalistyline, thalidezine, thalistyline methodiiodide and N-desmethylthalistyline were found to possess antimicrobial activity against Mycobacterium smegmatis at concentrations of 100 microgram/ml or less.</p>","PeriodicalId":18256,"journal":{"name":"Lloydia","volume":"40 4","pages":"384-94"},"PeriodicalIF":0.0,"publicationDate":"1977-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11542827","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
Quinquangulin, a new naphthopyrone from Cassia quinquangulata (Leguminosae). 从豆科决明子(quinquangulata)中分离出一种新的萘酮。
Lloydia Pub Date : 1977-07-01
M Ogura, G A Cordell, N R Farnsworth
{"title":"Quinquangulin, a new naphthopyrone from Cassia quinquangulata (Leguminosae).","authors":"M Ogura,&nbsp;G A Cordell,&nbsp;N R Farnsworth","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":18256,"journal":{"name":"Lloydia","volume":"40 4","pages":"347-51"},"PeriodicalIF":0.0,"publicationDate":"1977-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11763732","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
Catharanthus roseus tissue culture: the effects of medium modifications on growth and alkaloid production. 玫瑰花组织培养:培养基改良对生长和生物碱产生的影响。
Lloydia Pub Date : 1977-07-01
D P Carew, R J Krueger
{"title":"Catharanthus roseus tissue culture: the effects of medium modifications on growth and alkaloid production.","authors":"D P Carew,&nbsp;R J Krueger","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A number of nutritional factors as well as the growth factors 2,4-D and IAA were studied to determine their influence on growth and alkaloid formation in Catharanthus roseus suspension cultures. The optimal 2,4-D concentration for growth and alkaloid production was 1 mg/liter. With IAA, both 0.5 and 2.0 mg/liter in media produced tissue growth comparable to tissue receiving 1 mg/liter 2,4-D; however, qualitative and quantitative differences in alkaloid production were observed. Media formulations containing 2,4 and 6% sucrose showed proportionate increases in cell yield with increased sucrose, but concomitant decreases in alkaloid production. Suspension cultures in media containing 2, 5, and 10 times the normal level of phosphate exhibited little change in growth or alkaloid production. When thiamin HCl, yridoxine nicotinic acid and inositol were deleted from the medium, the tissue continued to grow well through the 24 month duration of the experiment; however, alkaloid production was altered quantitatively and qualitatively.</p>","PeriodicalId":18256,"journal":{"name":"Lloydia","volume":"40 4","pages":"326-36"},"PeriodicalIF":0.0,"publicationDate":"1977-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12079647","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
Naturally occurring compounds Containing a nitrogen-nitrogen bond. 含氮-氮键的天然化合物。
Lloydia Pub Date : 1977-07-01
T A LaRue
{"title":"Naturally occurring compounds Containing a nitrogen-nitrogen bond.","authors":"T A LaRue","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":18256,"journal":{"name":"Lloydia","volume":"40 4","pages":"307-21"},"PeriodicalIF":0.0,"publicationDate":"1977-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11360860","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
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