6981-15-3Relevant academic research and scientific papers
Electrophilic aryl-halogenation using N-halosuccinimides under ball-milling
Bose, Anima,Mal, Prasenjit
, p. 2154 - 2156 (2015/03/18)
We report here a methodology of chemo- and regio-selective aryl bromination and iodination using respective N-halosuccinimides at room temperature in the absence of any solvents, catalyst/additives under ball-milling condition. However, for chlorination ceric ammonium nitrate was used as additive. The coupled product succinimide, produced from the reactions, was recycled via regeneration of NBS. This methodology works with the electron-donor substituted or unsubstituted arenes.
Electrophilic aryl-halogenation using N-halosuccinimides under ball-milling
Bose, Anima,Mal, Prasenjit
supporting information, p. 2154 - 2156 (2014/04/03)
We report here a methodology of chemo- and regio-selective aryl bromination and iodination using respective N-halosuccinimides at room temperature in the absence of any solvents, catalyst/additives under ball-milling condition. However, for chlorination ceric ammonium nitrate was used as additive. The coupled product succinimide, produced from the reactions, was recycled via regeneration of NBS. This methodology works with the electron-donor substituted or unsubstituted arenes.
Synthesis of deuterated benzopyran derivatives as selective COX-2 inhibitors with improved pharmacokinetic properties
Zhang, Yanmei,Tortorella, Micky D.,Wang, Yican,Liu, Jianqi,Tu, Zhengchao,Liu, Xiaorong,Bai, Yang,Wen, Dingsheng,Lu, Xin,Lu, Yongzhi,Talley, John J.
, p. 1162 - 1166 (2014/12/10)
We designed a series of specifically deuterated benzopyran analogues as new COX-2 inhibitors with the aim of improving their pharmacokinetic properties. As expected, the deuterated compounds retained potency and selectivity for COX-2. The new molecules possess improved pharmacokinetic profiles in rats compared to their nondeuterated congeners. Most importantly, the new compounds showed pharmacodynamic efficacy in several murine models of inflammation and pain. The benzopyran derivatives were separated into their enantiomers, and the activity was found to reside with the S-isomers. To streamline the synthesis of the desired S-isomers, an organocatalytic asymmetric domino oxa-Michael/aldol condensation reaction was developed for their preparation.
Non-peptide GnRH agents, pharmaceutical compositions and methods for their use
-
, (2008/06/13)
Non-peptide GnRH agents capable of inhibiting the effect of gonadotropin-releasing hormone are described. Such compounds and their pharmaceutically acceptable salts, prodrugs, and active metabolites are suitable for treating mammalian reproductive disorders and steroid hormone-dependent tumors as well as for regulating fertility, where suppression of gonadotropin release is indicated. Methods for synthesizing the compounds and intermediates useful in their preparation are also described.
Analogs of 4-(3-bromo-8-methyl-10-methoxy-6,11-dihydro-5H- benzo[5,6]cyclohepta[1,2-b]pyridin-11-yl)-1-(4-pyridinylacetyl)piperidine N- oxide as inhibitors of farnesyl protein transferase
Afonso,Kelly,Weinstein,James,Bishop
, p. 1875 - 1880 (2007/10/03)
A series of 3-substituted analogs 3 of 4-(3-bromo-8-methyl-10-methoxy- 6,11-dihydro-5H-benzo[5,6]-cyclohepta[1,2b]pyridin-11-yl)-1-(4- pyridinylacetyl)piperidine N-oxide 2 was prepared and evaluated as FPT inhibitors. The objective of this study was to identify other substituents at C3 in this series of FPT inhibitors that would have the FPT potency enhancement similar to that found for a C3 bromo substituent. The 3-methyl analog 17b was found to be tenfold less active than 2, and other C3 substituents having more steric bulk were found to cause a further reduction in activity.
