“…(5) Himmelsbach et al, 1984Pfleiderer et al, 1985Pfister and Pfleiderer, 1989 -Happ et al, 1987Hagen and Chládek, 1989Heikkilä and Chattopadhyaya, 1983Marugg et al, 1984Nagaich and Misra, 1989 4-nitrophenylethyloxycarbonyl Nyilas et al, 1988 G (N2); A (N6); C (N4) Brown et al, 1989Rao et al, 1987Tanimura et al, 1988Schaller et al, 1963Balgobin et al, 1981 Köster et al, 1981Sinha et al, 1993Boal et al, 1996 4-(tert-butyl)phenoxyacetyl diphenylacetyl 3,4-dichlorobenzoyl 3-methoxy-4-phenoxybenzoyl and removal of N-acyl protecting groups can also be achieved by enzymatic methods (Prasad and Wengel, 1996).…”