A highly stereoselective synthesis of a model C(18)-C(35) spiroketal unit (7) of integramycin has been accomplished via an enantioselective stannyl-crotylboration reaction and an N-iodosuccinimide-mediated spiroketalization of 19a.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3094501 | PMC |
http://dx.doi.org/10.1021/ol200834p | DOI Listing |
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