MALASALA SUMALATHA
Articles written in Journal of Chemical Sciences
Volume 128 Issue 7 July 2016 pp 1019-1023 Regular Article
RITABRATA DATTA MALASALA SUMALATHA SUBRATA GHOSH
A convenient route for the synthesis of oxacyclobutapentalene, the tricyclic bridged core structure present in bioactive marine diterpene bielschowskysin and the polyketide hippolachnin A, is reported. The key steps involve ring closing metathesis of a triene derived from D-mannitol to produce selectively the dihydrofuran derivative instead of the cyclopentene derivative and a Cu(I)-catalyzed intramolecular [2+2]photocycloaddition of the dihydrofuran derivative.
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