Objective To explore potential natural products against severe acute respiratory syndrome coronavirus (SARS-CoV-2) via the study of structural and non-structural proteins of human coronaviruses. Methods In this study, we performed an in-silico survey of 25 potential natural compounds acting against SARS-CoV-2. Molecular docking studies were carried out using compounds against 3-chymotrypsin-like protease (3CL PRO ), papain-like protease (PL PRO ), RNA-dependent RNA polymerase (RdRp), non-structural protein (nsp), human angiotensin converting enzyme 2 receptor (hACE2R), spike glycoprotein (S protein), abelson murine leukemia viral oncogene homolog 1 (ABL1), calcineurin-nuclear factor of activated T-cells (NFAT) and transmembrane protease serine 2. Results Among the screened compounds, amentoflavone showed the best binding affinity with the 3CL PRO , RdRp, nsp13, nsp15, hACE2R. ABL1 and calcineurin-NFAT; berbamine with hACE2R and ABL1; cepharanthine with nsp10, nsp14, nsp16, S protein and ABL1; glucogallin with nsp15; and papyriflavonol A with PL PRO protein. Other good interacting compounds were juglanin, betulinic acid, betulonic acid, broussooflavan A, tomentin A, B and E, 7-methoxycryptopleurine, aloe emodin, quercetin, tanshinone I, tylophorine and furruginol, which also showed excellent binding affinity towards a number of target proteins. Most of these compounds showed better binding affinities towards the target proteins than the standard drugs used in this study. Conclusion Natural products or their derivatives may be one of the potential targets to fight against SARS-CoV-2. Electronic Supplementary Material Supplementary materials (Appendixes 1–6) are available in the online version of this article at DOI: 10.1007/s11655-021-3504-5

9,6)] octadec-9-en-16-one) is the soft coral-derived hopeful biologically active lead compound. In this review sinularin biological activities are summarized. For that, an up-to-date (from 1980 to Mar 2020) search was made in the PubMed, Science Direct, Web of Science, Scopus, The American Chemical Society, Clinicaltrials.gov, and Google Scholar databases. Data available suggest that sinularin has interesting anti-inflammatory, anticancer, anti-fouling and analgesic potential. The inducible nitric oxide synthase (iNOS), cyclooxigenase (COX)-2, tumor growth factor beta 1 (TGF-β1) are the most efficient enzymes for interacting with sinularin due to its anti-inflammatory activity, while phosphoinositol 3-kinase (PI3K), Akt and mechanistic target of rapamycin (mTOR) for its anticancer effect. In conclusion, sinularin seems to be a promissory lead compound in the treatment of inflammation, cancer and neurological disorders.

Metallo-drugs have gained a huge attention among scientific community in the couple years. These drugs types have become important compounds in cancer therapy, where, for instance, platinum complexes are being used against many tumors worldwide. Nonetheless, to p-cymene metallo-derivatives a promising anticancer potential has also been increasingly proposed. In this sense, the present review aims to provide an in-depth revision of p-cymene metallo-drugs possible mechanisms of anticancer action for upcoming pharmaceutical and biotechnological prospects. p-cymene metallo-derivatives have revealed very interesting anticancer activities in various test systems, including cancer cells, being thus worth of note to deepen knowledge through clinical trials on their upcoming use for cancer chemotherapy combination.

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Background Antioxidants have protective capacity, and can be used combinedly with other substances. Both, ascorbic acid (AA) and phytol (PHY) have many important biological activities, including antioxidant, anti-inflammatory, and organ protective activity. Recently, PHY has been found to exert an anti-pyretic effect in a mouse model. This study aims to evaluate the combined effects of AA and/or PHY with paracetamol (PARA) in Brewer’s yeast-induced fever mice model. Methods AA (125 mg/kg) and/or PHY (200 mg/kg) were orally co-treated with the PARA (100 mg/kg, p.o.) in Brewer’s yeast-induced fever Swiss mice. Data were analyzed by using GraphPadPrism software (version: 6.0), considering p < 0.05 at 95% confidence interval, and using one-way analysis of variance (ANOVA) through time, followed by Dunnett’s post hoc multiple comparison test. Results PARA alone and with PHY and/or AA significantly (p < 0.05) reduced rectal temperature at 1st h of observation. PHY reduced rectal temperature at 2nd h, then maintained basal temperature over the observation period (4 h). AA showed an insignificant anti-pyretic effect in experimental animals. However, in combination groups, AA (i.e., with PHY or PARA) did not found to interfere the PHY and PARA mediated reduction of rectal temperature in the animals. Furthermore, AA when co-treated with the PARA + PHY, it caused a slight hypothermic temperature at 1st h, which was then started to restablish from 2nd to 3rd h, and normalized at 4th h. Conclusion Taken together, AA did not interfere anti-pyretic effects of PARA and PHY, suggesting its possible use as a combination substance.