[EN] TETRAZINES FOR HIGH CLICK RELEASE SPEED AND YIELD<br/>[FR] TÉTRAZINES POUR UNE VITESSE ET UN RENDEMENT DE LIBÉRATION DE CHIMIE CLIC ÉLEVÉS
申请人:TAGWORKS PHARMACEUTICALS B V
公开号:WO2020256544A1
公开(公告)日:2020-12-24
Disclosed herein are tetrazines substituted with groups that result in a high click conjugation yield and high click release yields. In some of several other aspects, the invention relates to combinations and kits comprising said tetrazines and a dienophile, preferably a trans-cyclooctene. In another aspect, the compounds, combinations, and kits are for use as a medicament.
One-step synthesis of favipiravir from Selectfluor® and 3-hydroxy-2-pyrazinecarboxamide in an ionic liquid
作者:Germán Fuentes、María F. García、Hugo Cerecetto、Guzmán Álvarez、Marcos Couto、Angel H. Romero
DOI:10.1039/d3ob00380a
日期:——
against COVID-19 during the pandemic. Its synthesis has gained great interest and the conventional strategies proceed through multiple-step protocols (6–7 reaction steps), which involve, in addition, several drawbacks with global yields, lower than 34%. Herein, a simple, economical, eco-friendly and scalable (1 g) one-step protocol for the synthesis of favipiravir from the direct fluorination of the available