Pentafluorophenylammonium Trifluoromethanesulfonimide: Mild, Powerful, and Robust Catalyst for Mukaiyama Aldol and Mannich Reactions between Ketene Silyl Acetals and Ketones or Oxime Ethers
(C6F5N+H3⋅NTf2−) promotes Mukaiyama aldol and Mannich reactions using ketenesilylacetals with ketones and oxime ethers, respectively. The present robust method is mild, but powerful enough to utilize less accessible electrophiles such as enolizable ketones and oxime ethers to produce a variety of β‐hydroxy esters and β‐alkoxyamino esters, respectively. Mechanistic investigation revealed in situ generation
Vanilloid fatty hydroxamates as therapeutic anti-inflammatory pharmaceuticals
申请人:Laskin Jeffrey D.
公开号:US09422233B2
公开(公告)日:2016-08-23
Three unique subtypes of N-hydroxyamides and N-hydroxycarbamates containing both the vanilloid moiety (4-hydroxy-3-methoxybenzyl) and a lipophilic aliphatic moiety. Also disclosed are direct syntheses of these vanilloid fatty hydroxamates. The compounds possess inhibitory activity against the enzymes fatty acid amide hydrolase (FAAH) and matrix metallo-proteinase 9 (MMP-9). In addition, these substances bind to the calcium channel protein TRPV1 and inhibit vesicant-induced inflammation in skin and cornea. The compounds have utility in treating topical or systemic inflammatory processes in the skin and/or eye.
The first general method of direct and highly stereoselective Ti-mediated Mannich reaction between three types of simpleesters and E and Z mixtures of oxime ethers (aliphatic and aromatic) is accomplished.
Vanilloid Fatty Hydroxamates as Therapeutic Anti-inflammatory Pharmaceuticals
申请人:Laskin Jeffrey D.
公开号:US20120252891A1
公开(公告)日:2012-10-04
Three unique subtypes of N-hydroxyamides and N-hydroxycarbamates containing both the vanilloid moiety (4-hydroxy-3-methoxybenzyl) and a lipophilic aliphatic moiety. Also disclosed are direct syntheses of these vanilloid fatty hydroxamates. The compounds possess inhibitory activity against the enzymes fatty acid amide hydrolase (FAAH) and matrix metallo-proteinase 9 (MMP-9). In addition, these substances bind to the calcium channel protein TRPV1 and inhibit vesicant-induced inflammation in skin and cornea. The compounds have utility in treating topical or systemic inflammatory processes in the skin and/or eye.