PYRANOSIDE ALKENE TEMPLATES FOR THE SYNTHESIS OF CIS-2,5-DISUBSTITUTED TETRAHYDROFURAN SUBUNITS OF THE ACETOGENINS
摘要:
The iodoetherification reaction of t-butyl and trityl glycosides of C6 allylated-2,3-dideoxy-D-erythro- and D-threo-pyranosides was examined as part of a model study aimed at the synthesis of the 2,5-disubstituted tetrahydrofuran subunits found in the acetogenin group of natural products. In general, the t-butyl glycosides gave moderate, and the trityl derivatives, excellent stereoselectivity for the cis THF product.
PYRANOSIDE ALKENE TEMPLATES FOR THE SYNTHESIS OF CIS-2,5-DISUBSTITUTED TETRAHYDROFURAN SUBUNITS OF THE ACETOGENINS
摘要:
The iodoetherification reaction of t-butyl and trityl glycosides of C6 allylated-2,3-dideoxy-D-erythro- and D-threo-pyranosides was examined as part of a model study aimed at the synthesis of the 2,5-disubstituted tetrahydrofuran subunits found in the acetogenin group of natural products. In general, the t-butyl glycosides gave moderate, and the trityl derivatives, excellent stereoselectivity for the cis THF product.