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Discovery of pyrido[2,3-d]pyrimidine-based inhibitors of HCV NS5A

✍ Scribed by DeGoey, David A.; Betebenner, David A.; Grampovnik, David J.; Liu, Dachun; Pratt, John K.; Tufano, Michael D.; He, Wenping; Krishnan, Preethi; Pilot-Matias, Tami J.; Marsh, Kennan C.; Molla, Akhteruzzaman; Kempf, Dale J.; Maring, Clarence J.


Book ID
120937400
Publisher
Elsevier Science
Year
2013
Tongue
English
Weight
350 KB
Volume
23
Category
Article
ISSN
0960-894X

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Ring closure reactions of pyrido[2,3-d]p
✍ Dang Van Tinh; Wolfgang Stadlbauer πŸ“‚ Article πŸ“… 2008 πŸ› Journal of Heterocyclic Chemistry 🌐 English βš– 419 KB

## Abstract magnified image The cyclocondensation of 5‐hydroxy‐pyrido[2,3‐__d__]pyrimidines **1** with malonates gives pyrano[2β€²,3β€²:4,5]‐pyrido[2,3‐__d__]pyrimidines **2**. Nitration of **1** and reduction with zinc in the presence of carboxylic acids/anhydrides gave 2‐alkyloxazolo[5β€²,4β€²:4,5]pyrid