Design and synthesis of potential ribonucleotide reductase enzyme (RNR) inhibitors as antileukemic and/or antiviral 2′-deoxymethylene nucleosides
In order to improve the antitumor and/or antiviral activities of existing nucleoside analogs, eight new compounds (9a,b, 14a,b, 15a,b and 16a,b) were designed and synthesized. Halogen atom were incorporated at the 2-position of the purine base to render the amino group at the 6-position less suscept...
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doaj-dde0490c063b4394a2cb62da9dd39bda2020-11-25T00:10:07ZengSpringerOpenFuture Journal of Pharmaceutical Sciences2314-72452015-12-0112424910.1016/j.fjps.2015.10.001Design and synthesis of potential ribonucleotide reductase enzyme (RNR) inhibitors as antileukemic and/or antiviral 2′-deoxymethylene nucleosidesKhairia M. Youssef0Eric J. Lien1Dept. of Pharm. Chemistry, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University, Cairo 12311, EgyptDept. of Pharm. Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90033, USAIn order to improve the antitumor and/or antiviral activities of existing nucleoside analogs, eight new compounds (9a,b, 14a,b, 15a,b and 16a,b) were designed and synthesized. Halogen atom were incorporated at the 2-position of the purine base to render the amino group at the 6-position less susceptible to metabolism by adenosine deaminase. A methylene group was introduced at the 2′-position following the lead of nucleoside antibiotics angustmycin A and neplanocin A. The two key intermediates 9a and 9b were prepared from guanosine after protection of the 3′ and 5′ hydroxyl groups and oxidation of the 2′ hydroxyl group to the corresponding carbonyl group using swern method. The conversion of the carbonyl group to the methylene function was carried out by applying wittig reaction conditions. The final compounds 14a,b, 15a,b, 16a,b were prepared by means of nonaqueous diazotization of 9a and 9b. The prepared compounds were subjected to in vitro antileukemic and antiviral activity upon a new L1210 cell line that is doubly resistant to both hydroxyurea and deoxyadenosine which was grown and characterized. The new compounds showed potent antileukemic activity.http://www.sciencedirect.com/science/article/pii/S2314724515300194Ribonucleotide reductase enzyme (RNR) inhibitorsAntileukemicAntiviralAnticancer |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Khairia M. Youssef Eric J. Lien |
spellingShingle |
Khairia M. Youssef Eric J. Lien Design and synthesis of potential ribonucleotide reductase enzyme (RNR) inhibitors as antileukemic and/or antiviral 2′-deoxymethylene nucleosides Future Journal of Pharmaceutical Sciences Ribonucleotide reductase enzyme (RNR) inhibitors Antileukemic Antiviral Anticancer |
author_facet |
Khairia M. Youssef Eric J. Lien |
author_sort |
Khairia M. Youssef |
title |
Design and synthesis of potential ribonucleotide reductase enzyme (RNR) inhibitors as antileukemic and/or antiviral 2′-deoxymethylene nucleosides |
title_short |
Design and synthesis of potential ribonucleotide reductase enzyme (RNR) inhibitors as antileukemic and/or antiviral 2′-deoxymethylene nucleosides |
title_full |
Design and synthesis of potential ribonucleotide reductase enzyme (RNR) inhibitors as antileukemic and/or antiviral 2′-deoxymethylene nucleosides |
title_fullStr |
Design and synthesis of potential ribonucleotide reductase enzyme (RNR) inhibitors as antileukemic and/or antiviral 2′-deoxymethylene nucleosides |
title_full_unstemmed |
Design and synthesis of potential ribonucleotide reductase enzyme (RNR) inhibitors as antileukemic and/or antiviral 2′-deoxymethylene nucleosides |
title_sort |
design and synthesis of potential ribonucleotide reductase enzyme (rnr) inhibitors as antileukemic and/or antiviral 2′-deoxymethylene nucleosides |
publisher |
SpringerOpen |
series |
Future Journal of Pharmaceutical Sciences |
issn |
2314-7245 |
publishDate |
2015-12-01 |
description |
In order to improve the antitumor and/or antiviral activities of existing nucleoside analogs, eight new compounds (9a,b, 14a,b, 15a,b and 16a,b) were designed and synthesized. Halogen atom were incorporated at the 2-position of the purine base to render the amino group at the 6-position less susceptible to metabolism by adenosine deaminase. A methylene group was introduced at the 2′-position following the lead of nucleoside antibiotics angustmycin A and neplanocin A. The two key intermediates 9a and 9b were prepared from guanosine after protection of the 3′ and 5′ hydroxyl groups and oxidation of the 2′ hydroxyl group to the corresponding carbonyl group using swern method. The conversion of the carbonyl group to the methylene function was carried out by applying wittig reaction conditions. The final compounds 14a,b, 15a,b, 16a,b were prepared by means of nonaqueous diazotization of 9a and 9b. The prepared compounds were subjected to in vitro antileukemic and antiviral activity upon a new L1210 cell line that is doubly resistant to both hydroxyurea and deoxyadenosine which was grown and characterized. The new compounds showed potent antileukemic activity. |
topic |
Ribonucleotide reductase enzyme (RNR) inhibitors Antileukemic Antiviral Anticancer |
url |
http://www.sciencedirect.com/science/article/pii/S2314724515300194 |
work_keys_str_mv |
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