Vicinal tricarbonyls in synthesis. New routes to indolizidines.
作者:Harry H. Wasserman、Chi B. Vu、Jan D. Cook
DOI:10.1016/s0040-4020(01)88877-3
日期:——
The vinylvicinaltricarbonyl system 1 (VTC) has been used in two different approaches to prepare functionalized indolizidines. In one approach, 1 is used as a trielectrophile in reactions with primary amines possessing auxiliary donor sites. In a second approach, 1 is converted to a substituted 3-hydroxypyrrole-2-carboxylate. This pyrrole derivative then undergoes an intramolecular alkylation to give
METHODS FOR ARRANGING AND PACKING NUCLEIC ACIDS FOR UNUSUAL RESISTANCE TO NUCLEASES AND TARGETED DELIVERY FOR GENE THERAPY
申请人:The Regents of the University of California
公开号:US20150190525A1
公开(公告)日:2015-07-09
There are disclosed compositions and methods to render nucleic acids resistant to nuclease digestion while maintaining sequence selective hybridization competency. The approach relies on utilizing nucleic acids as the polar head group of a nucleic acid-polymer amphiphile in order to assemble well-defined, discrete micellar nanoparticles. Dense packing of nucleic acid in the micelle corona allows for hybridization of complementary oligonucleotides while prohibiting enzymatic degradation.