Merck + Co., Inc.

Anthony D Theoharides

Suresh K Balani

Laura R Kauffman

Byron H Arison

Harri G Ramjit

Incubation of ##STR1## with a preparation from mammalian organ yields as biotransformation products the 5-(1-hydroxy)ethyl pyridinone analog as well as the 5-(1-hydroxy)ethyl pyridyl and the 5-(2-hydroxy)ethyl pyridyl derivatives.

Method of hydroxylating

Incubation of 3-[(4,7-dichlorobenzoxazol-2-yl)methyl]amino-5-ethyl-6-methyl-2-(1H)-pyrid inone ##STR1## with a preparation from mammalian organ yields as biotransformation products the 5-(1-hydroxy)ethyl and 6-hydroxymethyl analogs. These products are useful in the prevention or treatment of infection by HIV and the treatment of AIDS.

Incubation of ##STR1## with a preparation from mammalian organ yields as biotransformation products the 6-hydroxymethyl and 5-(1-hydroxy)ethyl anologs. These products are useful in the prevention or treatment of infection by HIV and the treatment of AIDS.

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Lansdale, PA, United States of America

Anthony D Theoharides