Original articleImproved preparation of (1S,3′R,4′S,5′S,6′R)-5-chloro-6-[(4-ethylphenyl)methyl]-3′,4′,5′,6′-tetrahydro-6′-(hydroxymethyl)-spiro[isobenzofuran-1(3H),2′-[2H]pyran]-3′,4′,5′-triol

Add time:08/21/2019    Source:sciencedirect.com

A convenient approach for the preparation of (1S,3′R,4′S,5′S,6′R)-5-chloro-6-[(4-ethylphenyl)methyl]-3′,4′,5′,6′-tetrahydro-6′-(hydroxymethyl)-spiro[isobenzofuran-1(3H), 2′-[2H]pyran]-3′,4′,5′-triol is developed. The targeted compound was synthesized from 2-bromo-4-methylbenzoic acid in nine steps and the isomers of undesired ortho-products were avoided during the preparation.

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