{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,24]],"date-time":"2025-10-24T13:11:07Z","timestamp":1761311467221,"version":"build-2065373602"},"reference-count":194,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2019,2,22]],"date-time":"2019-02-22T00:00:00Z","timestamp":1550793600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"FCT","doi-asserted-by":"publisher","award":["POCI-01-0145-FEDER-028736,"],"award-info":[{"award-number":["POCI-01-0145-FEDER-028736,"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["PTDC\/MAR-BIO\/4694\/2014","UID\/Multi\/04423\/2013"],"award-info":[{"award-number":["PTDC\/MAR-BIO\/4694\/2014","UID\/Multi\/04423\/2013"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100006742","name":"Cooperativa de Ensino Superior Polit\u00e9cnico e Universit\u00e1rio","doi-asserted-by":"publisher","award":["CHIRALXANT-CESPU-2018."],"award-info":[{"award-number":["CHIRALXANT-CESPU-2018."]}],"id":[{"id":"10.13039\/501100006742","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Many naturally occurring xanthones are chiral and present a wide range of biological and pharmacological activities. Some of them have been exhaustively studied and subsequently, obtained by synthesis. In order to obtain libraries of compounds for structure activity relationship (SAR) studies as well as to improve the biological activity, new bioactive analogues and derivatives inspired in natural prototypes were synthetized. Bioactive natural xanthones compromise a large structural multiplicity of compounds, including a diversity of chiral derivatives. Thus, recently an exponential interest in synthetic chiral derivatives of xanthones (CDXs) has been witnessed. The synthetic methodologies can afford structures that otherwise could not be reached within the natural products for biological activity and SAR studies. Another reason that justifies this trend is that both enantiomers can be obtained by using appropriate synthetic pathways, allowing the possibility to perform enantioselectivity studies. In this work, a literature review of synthetic CDXs is presented. The structures, the approaches used for their synthesis and the biological activities are described, emphasizing the enantioselectivity studies.<\/jats:p>","DOI":"10.3390\/molecules24040791","type":"journal-article","created":{"date-parts":[[2019,2,22]],"date-time":"2019-02-22T03:49:44Z","timestamp":1550807384000},"page":"791","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":37,"title":["Synthetic Chiral Derivatives of Xanthones: Biological Activities and Enantioselectivity Studies"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0940-9163","authenticated-orcid":false,"given":"Carla","family":"Fernandes","sequence":"first","affiliation":[{"name":"Laborat\u00f3rio de Qu\u00edmica Org\u00e2nica e Farmac\u00eautica, Departamento de Ci\u00eancias Qu\u00edmicas, Faculdade de Farm\u00e1cia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal"},{"name":"Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Edif\u00edcio do Terminal de Cruzeiros do Porto de Leix\u00f5es, Av. General Norton de Matos s\/n, 4050-208 Matosinhos, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7076-9390","authenticated-orcid":false,"given":"Maria Let\u00edcia","family":"Carraro","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Qu\u00edmica Org\u00e2nica e Farmac\u00eautica, Departamento de Ci\u00eancias Qu\u00edmicas, Faculdade de Farm\u00e1cia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5185-3930","authenticated-orcid":false,"given":"Jo\u00e3o","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Qu\u00edmica Org\u00e2nica e Farmac\u00eautica, Departamento de Ci\u00eancias Qu\u00edmicas, Faculdade de Farm\u00e1cia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal"}]},{"given":"Joana","family":"Ara\u00fajo","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Qu\u00edmica Org\u00e2nica e Farmac\u00eautica, Departamento de Ci\u00eancias Qu\u00edmicas, Faculdade de Farm\u00e1cia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3320-730X","authenticated-orcid":false,"given":"Maria Elizabeth","family":"Tiritan","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Qu\u00edmica Org\u00e2nica e Farmac\u00eautica, Departamento de Ci\u00eancias Qu\u00edmicas, Faculdade de Farm\u00e1cia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal"},{"name":"Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Edif\u00edcio do Terminal de Cruzeiros do Porto de Leix\u00f5es, Av. General Norton de Matos s\/n, 4050-208 Matosinhos, Portugal"},{"name":"Cooperativa de Ensino Superior, Polit\u00e9cnico e Universit\u00e1rio (CESPU), Instituto de Investiga\u00e7\u00e3o e Forma\u00e7\u00e3o Avan\u00e7ada em Ci\u00eancias e Tecnologias da Sa\u00fade (IINFACTS), Rua Central de Gandra, 1317, 4585-116 Gandra PRD, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4676-1409","authenticated-orcid":false,"given":"Madalena M. M.","family":"Pinto","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Qu\u00edmica Org\u00e2nica e Farmac\u00eautica, Departamento de Ci\u00eancias Qu\u00edmicas, Faculdade de Farm\u00e1cia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal"},{"name":"Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Edif\u00edcio do Terminal de Cruzeiros do Porto de Leix\u00f5es, Av. General Norton de Matos s\/n, 4050-208 Matosinhos, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2019,2,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Tiritan, M.E., Ribeiro, A.R., Fernandes, C., and Pinto, M. (2016). Chiral pharmaceuticals. Kirk-Othmer Encyclopedia of Chemicl Technology, John Wiley & Sons, Inc.","DOI":"10.1002\/0471238961.1608011823092009.a01.pub2"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"323","DOI":"10.1016\/j.jpba.2017.07.008","article-title":"The market of chiral drugs: Chiral switches versus de novo enantiomerically pure compounds","volume":"147","author":"Calcaterra","year":"2018","journal-title":"J. Pharm. Biomed. Anal."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"105","DOI":"10.1016\/S1359-6446(03)02904-0","article-title":"Trends in the development of chiral drugs","volume":"9","author":"Caner","year":"2004","journal-title":"Drug Discov. 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