for the preparation of 3-substituted isocoumarins via palladium-catalyzed nucleophilic addition/oxidative annulation of bromoalkynes with benzoic acids has been developed. Remarkably, preliminary mechanistic studies indicated that the transformation might proceed via a stereo- and regioselective nucleophilic addition and C–H functionalization procedure.
3-Substituted Isocoumarins as Thymidine Phosphorylase Inhibitors
作者:Khalid Mohammed Khan、Sumbul Ahmed、Sajjad Hussain、Nida Ambreen/snm、>、Shahnaz Perveen、M. Iqbal Choudhary
DOI:10.2174/157018010790945805
日期:2010.5.1
3-Substituted isocoumarins 1-19 were synthesized and evaluated for their thymidine phosphorylase inhibitory activity. Eight (8) compounds exhibited a varying degree of inhibitory activity towards thymidine phosphorylase from E. coli with IC50 values between 61- 402 iM. The activities were compared with the standard 7-deazaxanthine (IC50 = 39.28 ± 0.76 iM).
2‐Substituierte Benzylbromide mit Carbonylfunktion in der Seitenkette sind in 2stufiger Reaktion aus 3‐substituierten Isocumarinen durch Lithiumalanatreduktion zu 3‐substituierten Isochromenen und deren Spaltung mit Bromwasserstoff zugänglich. Reaktionsprodukte und Mechanismus der Lithiumalanatreduktion werden diskutiert.
Derivatives of isoquinolinone and dihydrolisoquinolinone, and related compounds, and their use as pharmaceuticals in the treatment of a disease by inhibition of the enzyme poly(ADP-ribose)polymerase (“PARP”) are disclosed.
Synthetic derivatives of the antifungal drug ciclopirox are active against herpes simplex virus 2
作者:Maryam Zangi、Katherine A. Donald、Andreu Gazquez Casals、Abaigeal D. Franson、Alice J. Yu、Elise M. Marker、Molly E. Woodson、Scott D. Campbell、M. Abdul Mottaleb、Tanguturi Venkata Narayana Hajay Kumar、Makala Shakar Reddy、Lingala Vijaya Raghava Reddy、Subir Kumar Sadhukhan、David W. Griggs、Lynda A. Morrison、Marvin J. Meyers