No abstract

We synthesized three hydantocidin derivatives and evaluated their herbicidal activity in order to elucidate the role of the spirohydantoin system at the anomeric center of hydantocidin. With application to foliage at 1000 ppm, only α-ureidoamide 14 demonstrated activity, the remaining compounds being found to be inactive.

Synthetic Studies on (+)-Hydantocidin.Part 3. A New Synthetic Method for Construction of the Spiro-Hydantoin Ring at the Anomeric Position of D-Ribofuranose.-A facile route for the large-scale preparation of hydantocidin (IX) starts from the protected D-psicose (I) which, in turn, is prepared from D-fructose with 39% yield. -(MIO, S.; KUMAGAWA, Y.; SUGAI, S.; Tetrahedron 47 (1991) 12-13, 2133-2144; Agric.