✍ Scribed by Raymond Michel; Rosalind Pitt-Rivers; Jean Roche; Stelio Varrone
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Synthesis of Some Derivatives of 3,3', 5-Triiodo-~ and L-Thytonine By BENJAMIN BLANK Three pathways leading t o the methyl ethers of 3,3',5-triiodo-D and Gthyronine were explored. In these syntheses the acetyl, benzoyl, and trifluoroacetyl grou s were studied as suitable amine-protecting groups, thu
Absa'aet" The moao-and di-iodo derivatives of l-oxaspiro[2,5]bieyclooeta-4,7-dien-6-one, 8 and 9, reacted readily with 3,5-diiodo-L-t3,rosine at pH 8.0 to give 3,5,3'-triiodo-L-thyronine (1"3) and thyroxine in 70% and 94% yields respectively. In turn, 8 and 9 were prepared by the sodium bismuthate o
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