Symbols and Abbreviations.continued SUBSTITUENT GROUPS.continued an acetyl group: CH3-C- 9 a cyclohexyl group: oonroup:cH一《-含力 Ts 0 Boc REAGENTS AND SOLVENTS DCC dicyclohexylcarbodiimide 〉N=C=N〈 DMSO dimethylsulfoxide CH ether diethyl ether,CH3CH2OCH2CH3 MCPBA meta-chloroperoxybenzoic acid -0-0H MVK methyl vinyl ketone NBS N-bromosuccinimide continued on next page vi Symbols and Abbreviations, continued SUBSTITUENT GROUPS, continued o II Ac an acetyl group: CH3 - C - Cy a cyclohexyl group: 0- o Ts tosyl, or p-toluenesulfonyl group: CH3 � "==1 II S- o o II Boc a t-butoxycarbonyl group (amino acid and peptide chemistry): (CH3)3C -0 - C - Z, or Cbz a carbobenzoxy (benzyloxycarbonyl) group (amino acid and peptide chemistry): 0 REAGENTS AND SOLVENTS DCC dicyclohexylcarbodiimide o-N= C= N-Q DMSO dimethylsulfoxide o II S H3C ....... 'CH3 ether diethyl ether, CH3CH20CH2CH3 Cl 0 MCPBA meta-chloroperoxyhenzo;c ac;d < > g - 0 -OH MVK NBS o methyl vinyl ketone g H3C ....... � N -bromosucci nimide O�O N I Br continued on next page viii < )-CH2-0 - g-