The United States of America As Represented by the Department of Health

Research, Incorporated

John P Neenan

Jurij Rozhin

Anne L Huo

Jerome P Horwitz

Radhey S Misra

David C Ward

H William Prusoff

Yung-Chi Cheng

Kerstin D Philips, Deceased

Kirsten D Philips, Deceased

Analogs of 3'-phosphoadenosine 5'-phosphosulfate, also known as PAPS, are useful in establishing sulfate transfer mechanisms in animals and may be produced by a chemical process yielding an analog B of a pure adenosine 2',3'-cyclic phosphate 5'-phosphate, which compound is initially prepared from the reaction of adenosine and pyrophosphoryl chloride. In the present process an analog B is selected from 8-bromoadenine, purine, hypoxanthine, 4-aminopyrrolo[2,3-d]pyrimidine (tubercidin), and 7-amino-pyrazolopyrimidine (formycin). In the pilot procedure the pure cyclic phosphate is reacted with triethylamine-N-sulfonic acid to produce 2',3'-cyclic phosphate 5'-phosphosulfate. Subsequently, by hydrolysis with the enzyme ribonuclease-T.sub.2, the desired compound, an analog of PAPS, is produced. Alternatively, the 2'-phosphoadenosine 5'-phosphosulfate, known as iso-PAPS, may be produced from 2',3'-cyclic phosphate 5'-phosphosulfate by treatment with a different enzyme, PDase II or spleen phosphodiesterase.

Synthesis of analogs of 3'-phosphoadenosine 5'-phosphosulfate (PAPS)

3'-Phosphoadenosine 5'-phosphosulfate, also known as PAPS, is useful in establishing sulfate transfer mechanisms in animals and may be produced by a chemical process yielding 68-72% product from a pure adenosine 2',3'-cyclic phosphate 5'-phosphate, which compound is initially prepared from the reaction of adenosine and pyrophosphoryl chloride. In the present procedure the pure cyclic phosphate is reacted with triethylamine-N-sulfonic acid to produce 2',3'-cyclic phosphate 5'-phosphosulfate. Subsequently, by hydrolysis with the enzyme ribonuclease-T.sub.2, the desired compound is produced. Alternatively, the 2'-phosphoadenosine 5'-phosphosulfate, known as iso-PAPS, may be produced from 2',3'-cyclic phosphate 5'-phosphosulfate by treatment with a different enzyme, PDase or spleen phosphodiesterase. This latter compound, iso-PAPS, biologically has only one-third the activity of PAPS, the natural isomer.

Facile synthesis of 3'-phosphoadenosine 5'-phosphosulfate (PAPS)

The compounds 5'-amino-2',5'-dideoxy-5-iodouridine; 5'-amino-2',5'-dideoxy-5-bromouridine; and the pharmaceutically acceptable acid addition salts thereof have been found to be potent inhibitors of herpes simplex virus.

Anti herpes simplex viral compounds and their synthesis

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John P Neenan