coupling of ω‐allenyl‐substituted carboxylicacids. The use of a modified diop ligand, chiral DTBM‐diop, led to high enantioselectivity (up to 93 % ee). The reaction tolerated a large variety of functionalities, including α,β‐unsaturated carboxylicacids and depsipeptides, and provided the desired macrocycles with very high enantio‐ and diastereoselectivity.
[EN] NUCLEOSIDE PRODRUGS AND USES RELATED THERETO<br/>[FR] PROMÉDICAMENTS NUCLÉOSIDIQUES ET LEURS UTILISATIONS
申请人:UNIV EMORY
公开号:WO2021035214A1
公开(公告)日:2021-02-25
Disclosed are acyclic nucleoside prodrugs with improved metabolic stability and oral bioavailability. In general, the prodrugs are derivatives of acyclic nucleoside phosphonates containing a lipid-like moiety that can increase oral absorption and subsequent stability in the liver and plasma. Preferably, the lipid-like moiety can resist enzyme-mediated ω-oxidation, such as ω -oxidation catalyzed by cytochrome P450 enzymes. Also disclosed are pharmaceutical formulations of the acyclic nucleoside prodrugs. The acyclic nucleoside prodrugs and pharmaceutical formulations thereof can be used to treat viral infections, such as HIV infections, and/or viral-associated cancer, such as HPV-associated cancers.
Synthesis of Ceramide Mimics with a Pseudo Cyclic Framework
作者:Motonari Shibakami、Hikokazu Suzuki、Michiko Mori
DOI:10.1055/s-2003-42094
日期:——
We have designed and synthesized ceramide mimics with a pseudo cyclic framework that can be converted to ‘dimeric’ sphingomyelins and glycosphingolipids for potential components of artificial rafts. These molecules are characterized by the presence of (i) two hydrophilic head groups, (ii) a covalently bonded hydrocarbon chain, and (iii) two untethered alkyl chains. Self-assembling of a ceramide mimic into nanorods is briefly discussed.
ω-Functionalized Lipid Prodrugs of HIV NtRTI Tenofovir with Enhanced Pharmacokinetic Properties
作者:Nicole Pribut、Michael D’Erasmo、Madhuri Dasari、Kyle E. Giesler、Sabrina Iskandar、Savita K. Sharma、Perry W. Bartsch、Akshay Raghuram、Anatoliy Bushnev、Soyon S. Hwang、Samantha L. Burton、Cynthia A. Derdeyn、Adriaan E. Basson、Dennis C. Liotta、Eric J. Miller
DOI:10.1021/acs.jmedchem.1c01083
日期:2021.9.9
of two FDA-approved prodrugs, both of which metabolize prematurely in the liver and/or plasma. This premature prodrug processing depletes significant fractions of each oral dose and causes toxicity in kidney, bone, and liver with chronic administration. Although TFV exalidex (TXL), a phospholipid-derived prodrug of TFV, was designed to address this issue, clinical pharmacokinetic studies indicated substantial