N-tert-Butyl-N'-[5-cyano-2-(4-methyl­phen­oxy)phenyl­sulfon­yl]urea, a new TXA₂ receptor antagonist

The conformation of a new TXA₂ receptor antagonist, mainly determined by an intramolecular N-H...O hydrogen bond, is further explored using the Cambridge Structural Database.

Isolation, pharmacological activity and structure determination of physalin B and 5β,6β-ep­oxy­physalin B isolated from Congolese Physalis angulata L.

Two physalin compounds have been isolated from Congolese Physalis angulata L. plants and their structure and pharmacological activity has been determined. In both structures, physalin dimers are formed by inter­molecular hydrogen bonding.