𝔖 Bobbio Scriptorium
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O-methylation in the conversion of tyrosine to melanin

✍ Scribed by Julius Axelrod; Aaron B. Lerner

Book ID
115791890
Publisher
Elsevier Science
Year
1963
Weight
353 KB
Volume
71
Category
Article
ISSN
0006-3002

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of the steps (5e)+(4e)+(6e). However (4a), which differs only slightly from (4e), could be recovered in 66% yield after 24-h treatment with aqueous ammonium chloride. Hydrolysis of ( 4 a ) and (4 b) requires drastic conditions (KOH in dioxane/water, 24 h, 100Β°C) and affords 70% of (7ajr9] and (7b),