A convergent general synthetic protocol for construction of spirocyclic ketal ionophores: an application to the total synthesis of (-)-A-23187 (calcimycin)
作者:Robert K. Boeckman、Andre B. Charette、Theodros Asberom、Brian H. Johnston
DOI:10.1021/ja00258a063
日期:1987.11
trimethyl-3,5,5' spirobi-2:2'-pyrane via la reaction du dihydro-3,4 methoxymethoxymethyl-1' ethyl-2 methyl-3 pyranne avec le bromo-1 t-butyldimethylsiloxy-4 t-butyldiphenylsiloxy-6 methyl-3 hexane. Application a la synthese de la calcimycine
合成这些去叔丁基二苯基甲硅烷氧基-2″乙基-6'[羟甲基-1'乙基]-6全氢三甲基-3,5,5'螺双-2:2'-吡喃经由la反应二氢-3,4甲氧基甲氧基甲基-1 ' 乙基-2 甲基-3 吡喃 avec le bromo-1 t-丁基二甲基甲硅烷氧基-4 t-丁基二苯基甲硅烷氧基-6 甲基-3 己烷。应用a la 合成de la calcimycine
Toward a Total Synthesis of the Novel Polyketide Natural Product Spiculoic Acid A
作者:Goverdhan Mehta、Uday Kumar Kundu
DOI:10.1021/ol0521329
日期:2005.12.1
[GRAPHIC]An enantioselective approach toward the recently isolated marine natural product, spiculoic acid A, conceptualized along the proposed biogenetic hypothesis, involving an intramolecular Diels-Alder reaction as the pivotal step, is delineated. Access to a structurally embellished bicyclic core of the natural product has been accomplished.
Two routes to chiral dithianes, useful synthons for the preparation of functionalised spiroketals.
作者:Dominique de Kermadec、Michelle Prudhomme
DOI:10.1016/s0040-4039(00)60180-6
日期:1992.11
Two routes are described leading to chiral dithiane precursors for the synthesis of new substituted spiroketals. The stabilities of the methoxymethyl, tert-butyldimethylsilyl and tert-butyldiphenylsilyl hydroxyl protecting groups were tested in these reaction sequences.
BOECKMAN, ROBERT K. (JR);CHARETTE, ANDRE B.;ASBEROM, THEODROS;JOHNSTON, B+, J. AMER. CHEM. SOC., 113,(1991) N, C. 5337-5353
作者:BOECKMAN, ROBERT K. (JR)、CHARETTE, ANDRE B.、ASBEROM, THEODROS、JOHNSTON, B+
DOI:——
日期:——
de Kermadec D., Prudhomme M., New. J. Chem., 17 (1993) N 7, S 499-503