In recognition of the need to develop novel therapeutic agents, the present invention provides novel histone deacetylase inhibitors. These compounds include an ester bond making them sensitive to deactivation by esterases. Therefore, these compounds are particularly useful in the treatment of skin disorders. When the compounds reaches the bloodstream, an esterase or an enzyme with esterase activity cleaves the compound into biologically inactive fragments or fragments with greatly reduced activity Ideally these degradation products exhibit a short serum and/or systemic half-life and are eliminated rapidly. These compounds and pharmaceutical compositions thereof are particularly useful in treating cutaneous T-cell lymphoma, neurofibromatosis, psoriasis, hair loss, skin pigmentation, and dermatitis, for example. The present invention also provides methods for preparing compounds of the invention and intermediates thereto.
The ion-pair [Ph3C]+[B(C6F5)4]−-mediated electrocatalytic benzylic C−H oxidation is described. In the absence of expensive oxidants and external supporting electrolyte, the selective oxidation of benzylic C−H bonds in air was achieved.
SUBSTITUTED 2(5H)FURANONE, 2(5H)THIOPHENONE AND 2(5H)PYRROLONE DERIVATIVES, THEIR PREPARATION AND THEIR USE AS ENDOTHELIN ANTAGONISTS
申请人:WARNER-LAMBERT COMPANY
公开号:EP0714391A1
公开(公告)日:1996-06-05
A MILD CATALYTIC REDUCTION OF C-O BONDS AND C=O BONDS USING A RECYCLABLE CATALYST SYSTEM
申请人:ORGANOFUEL SWEDEN AB
公开号:US20170334819A1
公开(公告)日:2017-11-23
A method of reducing a C—O bond to the corresponding C—H bond in a substrate, which could be a benzylic alcohol, allylic alcohol, ester or an ether bond beta to a hydroxyl group or alpha to a carbonyl group using a recyclable metal catalyst system. The recyclable catalyst system is also applicable to reducing a C═O bond to the corresponding C—OH bond and then C—H bond. These methodologies can be linked in one-pot to selective oxidation and depolymerizations of aromatic polyols such as lignin.