Pharmaceutical Sciences and Health Technologies I.
Pollák, Patrik, MSc
QDQ5IR
Directorate of Drug Substance Development, Egis Pharmaceuticals PLC, Budapest, Hungary; Department of Organic Chemistry, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
06203791333
pollakpatrik.chem@gmail.com
Studies on the Total Syntheses of β‑carboline Alkaloids Orthoscuticellines A and B
Patrik Pollák1,2, Balázs Volk1, Mátyás Milen1
1: Directorate of Drug Substance Development, Egis Pharmaceuticals PLC, Budapest, Hungary
2: Department of Organic Chemistry, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
Szóbeli
Pharmaceutical Sciences and Health Technologies I.
English
Pharmaceutical Sciences and Health Technologies
Orthoscuticellines A and B are newly isolated natural β-carboline alkaloids from the moss animal Orthoscuticella ventricosa. Herein, we report the first targeted total synthesis of orthoscuticelline B and an analogous synthetic method for the preparation of dihydro derivate of orthoscuticelline A. The new synthetic approach is based on commercially available and inexpensive reagents leading to a practical synthesis of the target molecules. The reaction sequence consisting of a T3P®-catalyzed amide formation followed by a Bischler–Napieralski cyclisation and a DDQ-assisted dehydrogenation step ensures a practical access to orthoscuticelline B in three steps with 58% overall yield.
This work was prepared in the framework of 2020-1.1.2-PIACI-KFI-2020-00039 project with the support of the Ministry of Culture and Innovation from National Research Development and Innovation Fund.
Semmelweis University
Balázs Volk, Mátyás Milen
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Szabad
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7362
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16:25