Two xanthone compounds, praesorexanthone A (1) and praesorexanthone B (2), were isolated from the lichen Parmotrema praesorediosum (Nyl.) Hale (Parmeliaceae). Among them, praesorexanthone B is a new natural compound. Their chemical structures were unambiguously determined by the analysis of 1D and 2D NMR and high resolution ESI mass spectroscopic data, as well as by comparison of their NMR data with the ones in the literature.
{"title":"A new xanthone from the lichen Parmotrema praesorediosum (Parmeliaceae)","authors":"H. B. L. Chi, N. Phung","doi":"10.1002/VJCH.202000070","DOIUrl":"https://doi.org/10.1002/VJCH.202000070","url":null,"abstract":"Two xanthone compounds, praesorexanthone A (1) and praesorexanthone B (2), were isolated from the lichen Parmotrema praesorediosum (Nyl.) Hale (Parmeliaceae). Among them, praesorexanthone B is a new natural compound. Their chemical structures were unambiguously determined by the analysis of 1D and 2D NMR and high resolution ESI mass spectroscopic data, as well as by comparison of their NMR data with the ones in the literature.","PeriodicalId":23525,"journal":{"name":"Vietnam Journal of Chemistry","volume":"1 1","pages":"765-769"},"PeriodicalIF":0.9,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76622114","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}
{"title":"Identification of rice varieties specialties in Vietnam using Raman spectroscopy","authors":"L. Giang, P. Q. Trung, Dao Hai Yen","doi":"10.1002/VJCH.202000017","DOIUrl":"https://doi.org/10.1002/VJCH.202000017","url":null,"abstract":"","PeriodicalId":23525,"journal":{"name":"Vietnam Journal of Chemistry","volume":"10 1","pages":"711-718"},"PeriodicalIF":0.9,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80448843","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}
{"title":"Development of Green protocols for the synthesis of 1H‐benzo[d]imidazolo aryl amide derivatives and evaluation of their biological activity","authors":"E. Laxminarayana, B. S. Reddy, C. V. Reddy","doi":"10.1002/VJCH.202000079","DOIUrl":"https://doi.org/10.1002/VJCH.202000079","url":null,"abstract":"","PeriodicalId":23525,"journal":{"name":"Vietnam Journal of Chemistry","volume":"65 10","pages":"779-784"},"PeriodicalIF":0.9,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72573681","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}
N. T. Son, T. Tan, Do Thi My Lien, N. Huong, P. Tuyến, N. Phung, Quách Ngô Diễm Phương, N. Thu
{"title":"Five phenolic compounds from Marchantia polymorpha L. and their in vitro antibacterial, antioxidant and cytotoxic activities","authors":"N. T. Son, T. Tan, Do Thi My Lien, N. Huong, P. Tuyến, N. Phung, Quách Ngô Diễm Phương, N. Thu","doi":"10.1002/VJCH.202000088","DOIUrl":"https://doi.org/10.1002/VJCH.202000088","url":null,"abstract":"","PeriodicalId":23525,"journal":{"name":"Vietnam Journal of Chemistry","volume":"98 1","pages":"810-814"},"PeriodicalIF":0.9,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77205289","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}
Pham Thi Bich Thao, N. M. Thong, Q. Vo, M. Bay, Duong Tuan Quang, P. Nam
{"title":"Substituent effects on the antioxidant capacity of monosubstituted diphenylamines: a DFT study","authors":"Pham Thi Bich Thao, N. M. Thong, Q. Vo, M. Bay, Duong Tuan Quang, P. Nam","doi":"10.1002/VJCH.202000065","DOIUrl":"https://doi.org/10.1002/VJCH.202000065","url":null,"abstract":"","PeriodicalId":23525,"journal":{"name":"Vietnam Journal of Chemistry","volume":"6 1","pages":"742-751"},"PeriodicalIF":0.9,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85988111","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}
Nguyễn Hồng Nam, Vu Ngoc Linh, Le Duc Dung, Vu Thi Thai Ha
{"title":"Physico-chemical characterization of forest and agricultural residues for energy conversion processes","authors":"Nguyễn Hồng Nam, Vu Ngoc Linh, Le Duc Dung, Vu Thi Thai Ha","doi":"10.1002/VJCH.202000054","DOIUrl":"https://doi.org/10.1002/VJCH.202000054","url":null,"abstract":"","PeriodicalId":23525,"journal":{"name":"Vietnam Journal of Chemistry","volume":"48 1","pages":"735-741"},"PeriodicalIF":0.9,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81012765","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}
{"title":"Determination of organophosphate ester flame retardants in indoor dust and their potential health exposure risk","authors":"T. T. Hà, N. D. Cuong, L. Huyen, L. Giang","doi":"10.1002/VJCH.202000039","DOIUrl":"https://doi.org/10.1002/VJCH.202000039","url":null,"abstract":"","PeriodicalId":23525,"journal":{"name":"Vietnam Journal of Chemistry","volume":"15 1","pages":"723-730"},"PeriodicalIF":0.9,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78659855","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}
{"title":"A study on the application of Fenton process followed by coagulation for treatment of landfill leachate","authors":"Nguyen Trung Dung, B. Thanh, N. Huy","doi":"10.1002/VJCH.202000084","DOIUrl":"https://doi.org/10.1002/VJCH.202000084","url":null,"abstract":"","PeriodicalId":23525,"journal":{"name":"Vietnam Journal of Chemistry","volume":"94 1","pages":"792-797"},"PeriodicalIF":0.9,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91377369","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}
P. Tung, Tran Ngoc Minh Quyen, T. T. Quang, N. T. Van, Ngo Thi Thuy Duong, V. T. Ngan, L. Nga, N. Phung, N. Thu
{"title":"Chemical constituents of the n‐hexane extract of Leonotis nepetifolia (L.) R. Br (Lamiaceae)","authors":"P. Tung, Tran Ngoc Minh Quyen, T. T. Quang, N. T. Van, Ngo Thi Thuy Duong, V. T. Ngan, L. Nga, N. Phung, N. Thu","doi":"10.1002/VJCH.202000036","DOIUrl":"https://doi.org/10.1002/VJCH.202000036","url":null,"abstract":"","PeriodicalId":23525,"journal":{"name":"Vietnam Journal of Chemistry","volume":"1 1","pages":"719-722"},"PeriodicalIF":0.9,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74632844","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}
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