X Y RI R2 R3 R4 Compound VMB CI H A MDCV 1 H CI H A MDCV 2 H HH A DCV DESV CI CI H C AGLUV Cl H CI A CDPM HO CI H A CDPm WMB:万古霉素;MDV1、2:单脱氯万古霉素;DDcV:双脱 氯万古霉素;DESV:单糖万古霉素;AGLUⅣ:无糖万古霉素 GDPM、cDPm:万古霉素结晶型降解物异构体VM B：万古霉素；MDCV 1、2：单脱氯万古霉素；DDCV：双脱 氯万古霉素；DESV：单糖万古霉素；AGLUV：无糖万古霉素； CDPM、CDPm：万古霉素结晶型降解物异构体