1993 Volume 46 Issue 7 Pages 1116-1125
Trehalamine, (3aR, 4R, 5S, 6S, 6aS)-2-amino-4-(hydroxymethyl)-3a, 5, 6, 6a-tetrahydro-4H-cyclopent[d]oxazole-4, 5, 6-triol (1) and D-glucose were obtained by acid hydrolysis of trehazolin (3), a trehalase inhibitor produced by actinomycetes. More vigorous hydrolytic treatment of trehazolin afforded an aminocyclitol, (1R, 2S, 3R, 4S, 5R)-5-ammo-l-(hydroxymethyl)cyclopentane-1, 2, 3, 4-tetraol (2). Trehalamine, the aglycon of trehazolin, was also found in the culture broths of two trehazolin producing strains, Micromonospora sp. SANK 62390 and Amycolatopsis sp. SANK 60791. These trehazolin related compounds trehalamine (1) and 2 were poor inhibitors of trehalase (1; IC50 1.8 × 10-4 M, 2; > 5.0 × 10-4 M). On the other hand they inhibited more potently rat intestinal sucrase (1; IC50 6.8 × 10-5M) and sweet almond β-glucosidase (2; IC50 5.6× 10-6M) than trehazolin.
