Hybrid benzofuran–bisindole derivatives: New prototypes with promising anti-hyperlipidemic activities
摘要:
A series of different benzofuran bisindole hybrids were synthesized and evaluated in vitro for their antioxidant and in vivo for antidyslipidemic activity in triton WR-1339 induced hyperlipidemic rats. Among the series, compounds 4a, 4c, 4h and 4j showed significant decrease in plasma levels of total cholesterol (TC), phospholipids (PL) and triglycerides (TG) followed by increase in post heparin lipolytic activity (PHLA). In addition, the active hybrids possessed moderate antioxidant properties and increased the plasma lecithin cholesterol acyltransferase (LCAT) activity, which plays a key role in lipoprotein metabolism contributing to an increased level of HDL-C in serum. These results indicate that these hybrids constitute novel prototypes for the management of dyslipidemia. (C) 2013 Elsevier Masson SAS. All rights reserved.
One-Pot Regioselective Synthesis of Imidazole and 2,3-Dihydroquinazolinone Derivatives - An Easy Access to ‘Nature-Like Molecules'; Part XIII in the Series: ‘Studies on Novel Synthetic Methodologies'
A mild and highly practical regioselectivesynthesis of imidazole and 2,3-dihydroquinazolinone derivatives from 5-alkyl-4-hydroxyisophthalaldehydes with suitable substrates in acetic acid is reported. Further exploration of the molecular diversity of 2,3-dihydroquinazolinone is demonstrated by the synthesis of diverse pharmacologically relevant natural-product-like scaffolds.
Benzofuran-pyran hybrids: A new class of potential bone anabolic agents
作者:Sampa Gupta、Sulekha Adhikary、Ram K. Modukuri、Dharmendra Choudhary、Ritu Trivedi、Koneni V. Sashidhara
DOI:10.1016/j.bmcl.2018.04.041
日期:2018.6
analysis of these compounds on osteoblast cells revealed that compound 22 up-regulated the expression of osteogenic genes RUNX2, BMP-2, COL-1, thus substantiating that compound 22 having two geminalmethylgroups in its R3 position is a potent osteogenic agent. Additionally, compound 22 enhanced the ability of bone marrow stromal cells to differentiate towards osteoblast lineage and therefore can be
rat calvarial osteoblasts in vitro. Among all the compounds screened for the alkaline phosphatase activity, three compounds 4e, 4j and 4k showed potent activity at picomolar concentrations in osteoblast differentiating stimulation. Additionally, these compounds were found effective in mineralization, assessed by alizarinred-S staining assay. Compounds were again validated through a series of other in vitro
Discovery of coumarin-dihydroquinazolinone analogs as niacin receptor 1 agonist with in-vivo anti-obesity efficacy
作者:L. Ravithej Singh、Ajeet Kumar、Akanksha Upadhyay、Sampa Gupta、Gopala Reddy Palanati、Kamakshi Sikka、Mohammad Imran Siddiqi、Prem N. Yadav、Koneni V. Sashidhara
DOI:10.1016/j.ejmech.2018.04.037
日期:2018.5
In this study, we presented rational designing and synthesis of coumarin-dihydroquinazolinone conjugates to evaluate their agonist activity at GPR109a receptor. Among the synthesized small molecule library, compound 10c displayed robust agonist action at GPR109a with EC50 < 11 nM. Homology model of human GPR109a protein was generated to realize the binding interaction of the active molecule with the active site of GPR109a. Further, the efficacy of active compound 10c was supported by in -vivo experiments which showed reduced body weight in diet induced obese mice model. Interestingly, compound 10c reduced leptin in blood plasma and total serum cholesterol. These results suggest that the coumarin-dihydroquinazolinone conjugate is a suitable scaffold to further expand the chemical diversity and make them potential niacin receptor 1 agonist. (C) 2018 Elsevier Masson SAS. All rights reserved.
A new iodine catalyzed regioselective synthesis of xanthene synthons
作者:Koneni V. Sashidhara、Abdhesh Kumar、Ranga Prasad Dodda、Bikash Kumar
DOI:10.1016/j.tetlet.2012.04.061
日期:2012.6
This Letter describes the iodine catalyzed one-pot regioselective synthesis of p-condensed xanthenes as our key point of transformation, which provides an efficient access to five skeletally diverse scaffolds in excellent yields. (C) 2012 Elsevier Ltd. All rights reserved.