[EN] OPSIN-BINDING LIGANDS, COMPOSITIONS AND METHODS OF USE<br/>[FR] LIGANDS DE LIAISON À UNE OPSINE, COMPOSITIONS ET PROCÉDÉS D'UTILISATION
申请人:BIKAM PHARMACEUTICALS INC
公开号:WO2013058809A1
公开(公告)日:2013-04-25
Compounds are disclosed that are useful for treating ophthalmic conditions caused by or related to production of toxic visual cycle products that accumulate in the eye, such as dry adult macular degeneration, as well as conditions caused by or related to the misfolding of mutant opsin proteins and/or the mis-localization of opsin proteins. Compositions of these compounds alone or in combination with other therapeutic agents are also described, along with therapeutic methods of using such compounds and/or compositions. Methods of synthesizing such agents are also disclosed.
Heterogeneous Amine Catalyst Grafted on Amorphous Silica: An Effective Organocatalyst for Microwave-promoted Michael Reaction of 1,3-Dicarbonyl Compounds in Water
Michael addition of a 1,3-dicarbonyl compound to an α,β-unsaturated carbonyl compound was effectively catalyzed by heterogeneous N,N-diethylaminopropylated silica gel (NDEAP) in water under microwave heating. The reaction condition was mild, practical, and environmentally benign. The sustainable nature of the catalyst was exemplified by re-use up to 5 times.
General Methodologies Toward cis-Fused Quinone Sesquiterpenoids. Enantiospecific Synthesis of the epi-Ilimaquinone Core Featuring Sc-Catalyzed Ring Expansion
作者:Hilan Kaplan、Victor Rendina、Jason Kingsbury
DOI:10.3390/molecules22071041
日期:——
A stereocontrolled approach to the cis-decalin framework of clerodane diterpenes and biologically active quinonesesquiterpenes is reported. Starting from an inexpensive optically pure tetrahydroindanone, Birch reductive alkylation builds two new contiguous chiral centers—one of which is quaternary and all-carbon-substituted. Also featured is a highly regioselective diazoalkane—carbonyl homologation
Evaluating β-amino acids as enantioselective organocatalysts of the Hajos–Parrish–Eder–Sauer–Wiechert reaction
作者:Stephen G. Davies、Angela J. Russell、Ruth L. Sheppard、Andrew D. Smith、James E. Thomson
DOI:10.1039/b711171a
日期:——
A systematic study of the effect of substitution within the β-amino acid framework indicates that both β2- and β3-amino acids catalyse the HajosâParrishâEderâSauerâWiechert reaction with poor to reasonable levels of enantioselectivity. These results led to the evaluation of the conformationally constrained β-amino acid (1R,2S)-cispentacin, which catalyses the HajosâParrishâEderâSauerâWiechert reaction with comparable or higher levels of enantioselectivity to L-proline.
A catalytic process for the synthesis of optically active C4-substituted tetrahydroindandiones using an asymmetric intramolecular aldol condensation reaction was developed. When 30 mol% of phenylalanine and 50 mol% of pyridinium p-toluenesulfonate were used under highly concentrated conditions, a variety of C4-substituted tetrahydroindandiones and octahydronaphthalenediones were obtained in high yield