A stereocontrolled enantiospecific synthesis of anticapsin results in a revision of the C-4 configuration to that in structure 3; the carbonyl group of anticapsin has also been observed to show a high propensity for hydration and enolisation. ... Anticapsin, a non-proteinogenic amino acid obtained from culture filtrates of Bacillus subtilisl and Streptomyces griseo- planus,2 was assigned structure 1, and is a component of the dipeptide bacilysinl 2. The absolute configuration of the ...
