Beneficial Treatment Outcomes of Severe COVID-19 Patients Treated Entirely in Primary Care Settings With Dexamethasone Including Regimen-Case Series Report.

Even in 2021, coronavirus disease 2019 (COVID-19) remains a major global health concern, especially in developing countries. The burden of this disease, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which affects not only primary respiratory but also other organ systems, keeps rising as the pandemic continues. Primary health care centers are the first line where COVID-19 patients are managed and should be able to manage the vast majority of them successfully.

Adamantyl pyran-4-one derivatives and their in vitro antiproliferative activity.

Pyran-4-one (maltol, kojic acid and chlorokojic acid 1) esters of adamantan-1-ylacetic acid were prepared through efficient synthetic routes in good yields and evaluated for their in vitro antiproliferative activity on four cancer cell lines: K562 (chronic myelogenous leukemia), HeLa (cervical cancer), Caco-2 (colorectal adenocarcinoma) and NCI-H358 (bronchioalveolar carcinoma). The results indicate that the presence and the position of the adamantyl acyl group or chlorine atom are the necessary requirement for antitumor activity of pyranone systems. Derivatives of kojic acid with either free (compounds 1 and 8) or acylated 5-OH group (compounds 2 and 9) have shown good-to-moderate activity (IC values ranging from 13.