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The asymmetric unit of the title compound, C17H16O4, contains two crystallographically independent molecules with different absolute configurations.
organic compoundsOpen access
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The molecular conformation of the title compound, C14H24NO4PS3, the selective herbicide bensulide, is stabilized by a weak intramolecular C—H
S interaction. In the crystal, chains are formed through intermolecular N—HS hydrogen bonds.
S interaction. In the crystal, chains are formed through intermolecular N—HS hydrogen bonds.organic compoundsOpen access
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FK228 [systematic name: (1S,4S,7Z,10S,16E,21R)-7-ethylidene-4,21-di(propan-2-yl)-2-oxa-12,13-dithia-5,8,20,23-tetrazabicyclo[8.7.6]tricos-16-ene-3,6,9,19,22-pentone], C24H36N4O6S2, also known as FR901228, depsipeptide, NSC 630176, romidepsin, and marketed as Istodax by Celgene Corporation, is crystallized from ethyl acetate in P21 as compared to the absolute configuration of FK228, first crystallized from methanol in P212121 [Shigematsu et al. (1994). J. Antibiot. 47, 311–314]. A slight difference is observed between the absolute configuration of FK228 and the present structure. The molecular structure is stabilized by intramolecular N—HO hydrogen bonds. In the crystal, molecules are linked via N—HO hydrogen bonds.
O hydrogen bonds. In the crystal, molecules are linked via N—HO hydrogen bonds.organic compoundsOpen access
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The title compound [systematic name: (3S,8aS)-3-isopropylhexahydropyrrolo[1,2-a]pyrazine-1,4-dione], C10H16N2O2,, is a newly isolated cyclic dipeptide from Burkholderia thailandensis MSMB43. There are two independent molecules in the asymmetric unit. Two C atoms and their attached H atoms in the five-membered ring of one of the molecules are disordered over two sets of sites in a 0.715 (5):0.285 (5) ratio. The two independent molecules have the same configuration and the absolute configurations of the chiral centers were determined based on the observation of anomalous dispersion. In the crystal, two types of N—HO hydrogen bonds link pairs of independent molecules.
O hydrogen bonds link pairs of independent molecules. 
