| http://www.w3.org/ns/prov#value | - The examples of the processes are illustrated below with reference to reaction schemes. ##STR4## wherein R1, R2, R3, R4, A, B and l are as defined above, and X is a halogen atom, a lower alkanesulfonyloxy group having optionally a substituent, or an arylsulfonyloxy group having optionally a substituent.
|
