title: Synthesis of pyrazolo[4',3':5,6]pyrano[2,3-d]pyrimidine derivatives for antiviral evaluation.
abstract: 6-Amino-3-methyl-4-(4-nitrophenyl)-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile (1) was used as a precursor for preparation of some novel 3,7-dimethyl-4-(4-nitrophenyl)-2,4-dihydropyrazolo[4',3':5,6]pyrano[2,3-d]pyrimidine derivatives 3-6, and some of their corresponding N(2)- and C(5)-S-acyclic nucleosides 7 and 8. Furthermore, the preparation of 5-amino-1-[3,7-dimethyl-4-(4-nitrophenyl)-2,4-dihydropyrazolo[4',3':5,6]pyrano[2,3-d]pyrimidin-5-yl]-1H-pyrazole derivatives 10-16 were described. Some of the prepared products were selected and tested for antiviral activity against Herpes Simplex Virus type-1 (HSV-1).
authors.affiliation: Photochemistry Department, National Research Centre, Dokki, Cairo, Egypt. ahshamroukh@yahoo.com
authors.forename: Ahmed H
authors.initials: AH
authors.lastname: Shamroukh
authors.forename: Magdi E A
authors.initials: ME
authors.lastname: Zaki
authors.forename: Eman M H
authors.initials: EM
authors.lastname: Morsy
authors.forename: Faiza M
authors.initials: FM
authors.lastname: Abdel-Motti
authors.forename: Farouk M E
authors.initials: FM
authors.lastname: Abdel-Megeid
mesh_terms: D000998:Antiviral Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D018259:Herpesvirus 1, Human / Q000187:drug effects*; D011720:Pyrazoles / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D011741:Pyrimidine Nucleosides / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D011743:Pyrimidines / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D013329:Structure-Activity Relationship; D010948:Viral Plaque Assay; D014779:Virus Replication / Q000187:drug effects*
chemical_list: D000998:Antiviral Agents; D011720:Pyrazoles; D011741:Pyrimidine Nucleosides; D011743:Pyrimidines