11
11
&






                              !!!


             ,         
         .
&

         COOH
         
        HC
         
        HC
         
         COOH

^4


         COOH
         
        HCH
         
        HCOH
         
         COOH

^1




         H
     R - C - NH
              2
         COOH


^4


                                 H
                                HC-OH
                                 
                                HC-OH
                                 
                                HC-OPO H
                                 H    3 2

^1




         COOH                                                   S
                                                               
        HC - NH                                                 C=0
         H     2                                                
                                                                CH3

^2

                H O P-O-CH
                 2 3     2
                        C  O
                     H/ H       \H
                     C           C
                    HO\ OH    H /OH
                        C  C
                        H     OH

^5



                                   H
                                   
                              CH - C - COOH
                                3  
                                   NH
                                     2

^5




                                     CH3
                                     
                                     C=O
                                     
                                     S

^6


                                 H
                                HC-OH
                                 
                                HC-OH
                                 
                                HC-OH
                                 H

^2



                                  COOH
                                  
                                 HC-OH
                                  
                                H C-OPO H
                                 2     3 2

^5



                                                  COOH
                                                  
                                                 HC-OPO H
                                                      3 2
                                                H C-OH
                                                 2

^4


