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Dichloro-3,6-dimethylpyrazine 1,4-dioxide with 0.5 sodium hydroxide at 20° for 5 hours gave 2-chloro-5-hydroxy-3,6-dimethylpyrazine 1,4-dioxide which resisted further alkaline hydrolysis (842) (possibly due to anion formation, whereas sodium ethoxide and sodium benzyloxide rapidly displaced both chloro substituents). Similarly bromoaspergillic acid (3-bromo-2-s-butyl-6-hydroxy-5-isobutylpyrazine... [Pg.151]

See other pages where Bromoaspergillic acid is mentioned: [Pg.119] [Pg.194] [Pg.199] [Pg.119] [Pg.194] [Pg.199]