Oh ET, Kim YH, Jin J, Su L, Seo JA, Koo S. Sulfone-mediated syntheses of crocetin derivatives: regioselectivity of highly functionalized building blocks.
J Org Chem 2014;
79:4712-7. [PMID:
24766128 DOI:
10.1021/jo500478u]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
New C5 sulfone building blocks containing a masked polar end group have been devised for the efficient synthesis of carotenoids with polar termini. Chemoselectivity or the regiochemical issue of the highly functionalized units has been carefully addressed depending on the soft or hard nature of electrophiles. These building blocks have been successfully applied to the syntheses of crocetin derivatives, crocetin dial and the novel crocetin dinitrile.
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