作者:Margaret A Brimble、Timothy J Brenstrum
DOI:10.1016/s0040-4039(00)00289-6
日期:2000.4
The synthesis of a 2-deoxyglucosyl analogue 2 of the pyranonaphthoquinone antibiotic medermycin 1 is reported. The critical beta C-glycoside linkage was introduced at an early stage in the synthesis by direct C-glycosylation of naphthol 7 with benzyl protected glycosyl donor 4. Conversion of C-glycoside 8 to 2-acetyl-1,4-naphthoquinone 3 then allowed assembly of the pyranonaphthoquinone skeleton via a furofuran annulation-oxidative rearrangement strategy. (C) 2000 Elsevier Science Ltd. All rights reserved.