Synthesis and Anti-HIV Activity of Alkyl Steroidal 3′-Azido-3′-deoxythymidin-5′-yl Phosphotriesters as Prodrugs of AZT
摘要:
Alkyl steroidal AZT 5'-monophosphate triesters are designed as lipophilic prodrugs of AZT to improve its therapeutic efficiency. We have synthesized four phosphotriesters of AZT, in one-pot, using phosphoramidite-phosphite triester methodology. This method afforded the desired prodrugs in high yields under mild conditions. The in vitro evaluation of anti-HIV activity of these prodrugs is also reported.
5'-End-modified pentadecadeoxyribonucleotides (15mers) with a sequence complementary to the tat 2nd splicing acceptor region of human immunodeficiency virus type 1 (HIV-1) were prepared and evaluated for anti-HIV-1 activity. The structures of modified 15mers were confirmed by negative ion LSI mass spectroscopy, and the anti-HIV-1 activities were evaluated in vitro by MTT assay using MT-4 cells. While the unmodified 15mer had no activity in our assay system, the 15mers bearing modifications with trityl-type substituents at the 5'-end showed potent anti-HIV-1 activities.
NUCLEIC ACID DERIVATIVE HAVING IMMUNOSTIMULATORY ACTIVITY
申请人:Shionogi & Co., Ltd.
公开号:US20180264105A1
公开(公告)日:2018-09-20
The purpose of the present invention is to provide double-stranded oligonucleotides comprising the CpG oligonucleotide mentioned below, as a nucleic acid derivative having an immunostimulatory activity.
An adjuvant comprising a double-stranded oligonucleotide, wherein
a first strand is a CpG oligonucleotide consisting of 8 to 50 nucleotides,
a second strand is an oligonucleotide consisting of 8 to 60 nucleotides and comprising
a sequence capable of hybridizing with the first strand, and a lipid binds to the second strand through a linker.
Synthesis and Anti-HIV Activity of Alkyl Steroidal 3′-Azido-3′-deoxythymidin-5′-yl Phosphotriesters as Prodrugs of AZT
作者:Meher I. Balagopala、Abraham P. Ollapally、Henry J. Lee
DOI:10.1080/15257779408010667
日期:1994.9
Alkyl steroidal AZT 5'-monophosphate triesters are designed as lipophilic prodrugs of AZT to improve its therapeutic efficiency. We have synthesized four phosphotriesters of AZT, in one-pot, using phosphoramidite-phosphite triester methodology. This method afforded the desired prodrugs in high yields under mild conditions. The in vitro evaluation of anti-HIV activity of these prodrugs is also reported.