Derivatives of Coenzyme F430 with a Covalently Attached alpha-Axial Ligand Part II Partial Synthesis of the Five Coenzyme F430 Tetramethyl Esters and of a Derivative with a Coordinating N^p^i-Methyl-L-histidine Ligand Covalently Attached to the Side Chain at C(3) of F430 via a Peptidic Linker