Add time:07/21/2019         Source:sciencedirect.com

Treatment of uroporphyrinogen I octamethyl ester with 2-mercaptobenzothiazolylmethyl pyrrole derivative in the presence of silver (I) trifrate under anaerobic condition in dichloromethane for 20 h, followed by aerial oxidation of the products, gave a statistical mixture of uroporphyrin I∼IV octamethyl esters. It was proposed that this transformation proceeds through a spiro-pyrrolenine as a key intermediate.

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