Total Synthesis of (+)-Prunustatin A: Utility of Organotrifluoroborate-Mediated Prenylation and Shiina MNBA Esterification and Macrolactonization To Avoid a Competing Thorpe–Ingold Effect Accelerated Transesterification
作者:Maja W. Chojnacka、Robert A. Batey
DOI:10.1021/acs.orglett.8b02396
日期:2018.9.21
A convergent totalsynthesis of (+)-prunustatin A is described through the assembly of two key fragments and a macrolactonization. Shiina MNBA couplings were used for the formation of each of the four ester bonds in the tetralactone ring, including the key macrocyclization which was essential to minimize competing Thorpe–Ingold accelerated transesterification. Other key steps included an organoboron-based
Total Synthesis of Carolacton, a Highly Potent Biofilm Inhibitor
作者:Thomas Schmidt、Andreas Kirschning
DOI:10.1002/anie.201106762
日期:2012.1.23
Metals are the key players in the synthesis of caralacton, a strong inhibitor of bacterial biofilms. The totalsynthesis is based on several metal‐mediated key transformations such as the Ley and the Duthaler–Hafner aldol reactions, the Marshall reaction and Breit's substitution, as well as the Nozaki–Hiyama–Kishi and Negishi–Fu CC coupling reactions.
Synthesis of chiral zileuton, a potent and selective inhibitor of 5-lipoxygenase
作者:Chi-Nung Hsiao、Teodozyj Kolasa
DOI:10.1016/s0040-4039(00)79043-5
日期:1992.5
Coupling and intramolecular Wittigreaction of N-benzyloxy-D-alanine anhydride (13) and (2-Mercaptophenyl)methyltriphenylphosphonium bromide (3) were used as key steps to prepare (+)-enantiomer of zileuton (1), a potent and selective inhibitor of 5-lipoxygenase.
Methods and compositions for preventing opioid abuse
申请人:Waterville Valley Technologies, Inc.
公开号:US10226456B2
公开(公告)日:2019-03-12
Abuse-resistant opioid compounds, drug delivery systems, pharmaceutical compositions comprising an opioid covalently bound to a chemical moiety are provided. Methods of delivering an active ingredient to a subject and methods of preventing opioid abuse are also provided.