Global clinical trial mobilization for COVID-19: higher, faster, stronger
DRUG DISCOVERY TODAY
Authors: Beall, Reed F.; Hollis, Aidan
Abstract
The clinical trial landscape for Coronavirus 2019 (COVID-19) is radically different from that of previous epidemics. Compared with H1N1, Ebola, and Zika, COVID-19 had an order of magnitude more clinical trials within the first 3 months following the declaration of a Public Health Emergency of International Concern (PHEIC). These trials have started much faster, are more geographically diverse, and are less likely to be funded by industry. However, the almost simultaneous design and initiation of hundreds of trials with 0.3 million participants across 78 countries creates the potential for congestion and inefficiencies and enhances risks for investors. Thus, an international coordination mechanism for clinical trials could be valuable in this and other situations.
Design, synthesis and anti-influenza A virus activity of novel 2,4-disubstituted quinazoline derivatives
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
Authors: Wang, Minghua; Zhang, Guoning; Wang, Yujia; Wang, Juxian; Zhu, Mei; Cen, Shan; Wang, Yucheng
Abstract
Four 2,4-disubstituted quinazoline series containing various amide moieties were designed and synthesized as new anti-influenza A virus agents using the strategies of bio-isosterism and scaffold hopping. Many of them exhibit potent in vitro anti-influenza A virus activity and low cytotoxicity (CC50: > 100 mu M). Particularly, compounds 10a5 and 17a show better activity (IC50: 3.70-4.19 mu M) and higher selective index (SI: > 27.03, > 23.87, respectively) against influenza A/WSN/33 virus (H1N1), opening a new direction for quinazoline derivatives in anti-influenza A virus field.