Novel substituted (Z)-5-((N-benzyl-1H-indol-3-yl)methylene)imidazolidine-2,4-diones and 5-((N-benzyl-1H-indol-3-yl)methylene)pyrimidine-2,4,6(1H,3H,5H)-triones as potent radio-sensitizing agents
作者:Y. Thirupathi Reddy、Konjeti R. Sekhar、Nidhish Sasi、P. Narsimha Reddy、Michael L. Freeman、Peter A. Crooks
DOI:10.1016/j.bmcl.2009.11.082
日期:2010.1
A series of (Z)-5-((N-benzyl-1H-indol-3-yl)methylene)imidazolidine-2,4-dione (9a-9m) and 5-((N-benzyl-1H-indol-3-yl)methylene)pyrimidine-2,4,6(1H,3H,5H)-trione (10a-10i) derivatives that incorporate a variety of aromatic substituents in both the indole and N-benzyl moieties have been synthesized. These analogs were evaluated for their radiosensitization activity against the HT-29 cell line. Three analogs, 10a, 10b, and 10c were identified as the most potent radiosensitizing agents. (C) 2009 Elsevier Ltd. All rights reserved.
Aplysinopsin analogs: Synthesis and anti-proliferative activity of substituted (Z)-5-(N-benzylindol-3-ylmethylene)imidazolidine-2,4-diones
作者:Y. Thirupathi Reddy、P. Narsimha Reddy、Srinivas Koduru、Chendil Damodaran、Peter A. Crooks
DOI:10.1016/j.bmc.2010.03.054
日期:2010.5
A series of substituted (Z)-5-(N-benzylindol-3-ylmethylene)imidazolidine-2,4-dione ( 3) analogs structurally related to aplysinopsin, and that incorporate a variety of substituents in both the indole and N-benzyl moieties have been synthesized under microwave irradiation and conventional heating methods These analogs were evaluated for their anti-proliferative activity against MCF-7 and MDA-231 breast cancer cell lines, and A549 and H460 lung cancer cell lines. Two analogs, 3f and 3j had IC50 values of 4.4 and 5.2 mu M, respectively, compared to 5-fluorouracil (IC50 = 15.2 mu M) against MCF-7 cells. (C) 2010 Elsevier Ltd. All rights reserved.
Microwave assisted synthesis and in vitro cytotoxicities of substituted (Z)-2-amino-5-(1-benzyl-1H-indol-3-yl)methylene-1-methyl-1H-imidazol-4(5H)-ones against human tumor cell lines
作者:Narsimha Reddy Penthala、Thirupathi Reddy Yerramreddy、Peter A. Crooks
DOI:10.1016/j.bmcl.2009.11.083
日期:2010.1
The synthesis of several novel substituted (Z)-2-amino-5-(1-benzyl-1H-indol-3-yl)methylene-1-methyl-1H-imidazol-4(5H)-ones structurally related to aplysinopsin have been carried out under microwave irradiation and conventional heating methods. The analogs 3a, 3b, 3d-3g, 3k and 3l were evaluated for their in vitro cytotoxic activity against an NCI 60 human tumor cell line panel. Compound 3f exhibited good growth inhibitory properties against all but four of the human cancer cell lines examined, and afforded LC50 values < 10 mu M for 30% of the cell lines in the panel. Compound 3e was an effective inhibitor of leukemia, CNS, melanoma, and breast cancer cell growth, but generally less effective as a cytotoxic agent. Thus, the aplysinopsin analog 3f was regarded as a useful lead compound for further structural optimization. (C) 2009 Elsevier Ltd. All rights reserved.
Catalytic Enantioselective Diels–Alder Reactions of Benzoquinones and Vinylindoles with Chiral Magnesium Phosphate Complexes
作者:Yujia Bai、Jinping Yuan、Xiaoyue Hu、Jon C. Antilla
DOI:10.1021/acs.orglett.9b01437
日期:2019.6.21
Tetrahydrocarbazole and its derivatives have received much attention due to the prevalence of this scaffold in natural products and their use in organic synthesis. We have developed a Diels–Alderreaction of benzoquinones and 3-vinylindoles catalyzed by chiral magnesium phosphate complexes to provide tetrahydrocarbazole derivatives in excellent yields and enantioselectivities (up to >99% yield, 99%