Reactions of 6-thiotheophylline with alkylating agents and epichlorohydrin: Isolation of<i>S</i>-alkylated 6-thiotheophylline and 7-(2,3-thioepoxypropyl)theophylline
of 6-thiotheophylline (1) under the aprotic basic condition affords S-alkylated 6-thiotheophylline (3) together with an N7 -alkylated product 4. There is a tendency that the more reactive the alkylatingagents are, the higher the yields of S-alkylated products are. On the other hand, treatment of 6-thiotheophylline (1) with epichlorohydrin afforded an unexpected product, 7-(2,3-thioepoxypropyl)theophylline
[EN] POLY(ADP-RIBOSE) GLYCOHYDROLASE (PARG) INHIBITORS AGAINST COVID MACRODOMAIN AND METHODS OF USING THE SAME<br/>[FR] INHIBITEURS DE LA POLY(ADP-RIBOSE) GLYCOHYDROLASE (PARG) DIRIGÉS CONTRE LE MACRODOMAINE DU CORONAVIRUS ET PROCÉDÉS D'UTILISATION DE CEUX-CI
申请人:UNIV TEXAS
公开号:WO2022159818A1
公开(公告)日:2022-07-28
The present disclosure provides compounds of Formula (Ia) and Formula (Ib) and the pharmaceutically acceptable salts and solvates thereof, wherein A1, A2, R1, R2, R3, and R4are defined as set forth in the specification. The present disclosure also provides the use of compounds of Formula (Ia) or Formula (Ib) to treat a coronavirus infection in a subject.
Solvent-free Synthesis of Thio-alkylxanthines from Alkylxanthines Using Microwave Irradiation
作者:Rodrigo Rico-Gómez、Francisco Nájera、Juan Manuel López-Romero、Pedro Cañada-Rudner
DOI:10.3987/com-00-9003
日期:——
An expeditious, solvent-free procedure for the conversion of the xanthine bases theophylline, 8-methyltheophylline, caffeine, and theobromine to the corresponding 6-thio and 2,6-dithio derivatives using Lawesson's reagent under microwave irradiation is proposed.