The I3C nmr spectral analysis has been recorded for the title compounds in DCC1, and all data appear to be in a accord with chair forms. Single crystal x-ray diffraction analysis of 1-phenyl-4-phosphorinanone 1-oxide and the corresponding sulfide revealed flattened chair forms in the solid state. Neither the solution data nor the x-ray data provided any evidence for a twist form for either compound as has been suggested for the carbon counterpart, namely, cyclohexane-1.4-dione.

1. The structures of N4-tetraacetyl-d-glucosidosulfanilamide and N4-dglucosidosulfanilamide have been confirmed by direct synthesis, and experimental evidence has been presented to show that the glucósido residue in the glucoside is on the N4-nitrogen atom.2. The chemotherapeutic activity of N4-d-glucosidosulfanilamide against streptococci has been briefly compared with that of sulfanilamide. Burlington, Vt.

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