An aza-nucleoside, fragment-like inhibitor of the DNA repair enzyme alkyladenine glycosylase (AAG)
作者:Eduard Mas Claret、Balqees Al Yahyaei、Shuyu Chu、Ruan M. Elliott、Manuel Imperato、Arnaud Lopez、Lisiane B. Meira、Brendan J. Howlin、Daniel K. Whelligan
DOI:10.1016/j.bmc.2020.115507
日期:2020.6
The DNArepairenzyme AAG has been shown in mice to promote tissue necrosis in response to ischaemic reperfusion or treatment with alkylating agents. A chemical probe inhibitor is required for investigations of the biological mechanism causing this phenomenon and as a lead for drugs that are potentially protective against tissue damage from organ failure and transplantation, and alkylative chemotherapy
Addition of Deoxyribose to Guanine and Modified DNA Bases by <i>Lactobacillus helveticus</i> <i>trans</i>-<i>N</i>-Deoxyribosylase
作者:Michael Müller、Linda K. Hutchinson、F. Peter Guengerich
DOI:10.1021/tx9600661
日期:1996.1.1
trans-N-deoxyribosylase was evaluated as an alternative method for deoxyribosylation in the synthesis of deoxyribonucleosides containing potentially mutagenic adducts. A crude enzyme preparation was isolated from Lactobacillus helveticus and compared to Escherichia coli purinenucleoside phosphorylase. trans-N-deoxyribosylase was more regioselective than purinenucleoside phosphorylase in the deoxyribosylation of
Methods of screening for nucleoside analogs that are incorporated by HIV
申请人:Darwin Molecular Corporation
公开号:US05512431A1
公开(公告)日:1996-04-30
Methods and compositions related to HIV are disclosed. Using the methods of the present invention, nucleoside analogs may be screened for the ability to be incorporated by reverse transcriptase of human immunodeficiency virus ("HIV RT") and cause incorrect base pairing. Progressive mutation of the virus by such nucleoside analogs renders it non-viable.
Synthesis of 8-(Hydroxymethyl)-3,<i>N</i><sup>4</sup>-etheno-2‘-deoxycytidine, a Potential Carcinogenic Glycidaldehyde Adduct, and Its Site-Specific Incorporation into DNA Oligonucleotides
作者:Ahmed Chenna、Alex Perry、B. Singer
DOI:10.1021/tx990181m
日期:2000.3.1
The previously unreported glycidaldehyde adduct, 8-(hydroxymethyl)-3,N-4-etheno-2'-deoxycytidine (8-HM-epsilon dC), has been synthesized for the first time by reaction of 2'-deoxycytidine with bromoacetaldehyde at pH 4.5, followed by reduction with sodium borohydride. The adduct was characterized by UV, MS, and NMR. The compound was stable to neutral and acidic conditions but not in alkaline solution. The corresponding phosphoramidite was synthesized in good yield from the intermediate, 3,N-4-ethenocarbaldehyde-2'-deoxycytidine using the standard methodology and site-specifically incorporated in both 15- and 25-mer oligonucleotides, for studies on biochemical and biophysical properties. The resulting oligonucleotides were purified using HPLC, and the base composition was verified by HPLC after enzymatic digestion.
BARBATO, STEFANIA;PICCIALLI, GENNARO;SANTACROCE, CIRO;DE, NAPOLI LORENZO;+, NUCLEOSIDES AND NUCLEOTIDES, 10,(1991) N, C. 867-882
作者:BARBATO, STEFANIA、PICCIALLI, GENNARO、SANTACROCE, CIRO、DE, NAPOLI LORENZO、+