In the title compound, C(17)H(15)NO(5)S, the benzene ring of the fused-ring system is twisted by 11.67 (6)° with respect to the thia-zine ring. The atoms of the four-atom methyl ester group and the phenyl ring of the benzyl unit are inclined at 16.50 (7) and 44.52 (3)° with respect to the thia-zine ring. An intra-molecular O-H⋯O hydrogen bond gives rise to a six-membered S(6) ring motif. In the...

One of the main reasons for nonlinearity tension diagrams cotton yarns is variability their moduli elasticity and plasticity under strain. The changes in strain obtained from tensile confirm this. curve has ten parameters, values which depend on method yarn manufacture rate. Based results processing yarn, by carded combed systems ring rotor spinning (CD-carded ring-spun, OE-carded rotor-spun, C...

We use the concept of a regular object with respect to another object in an arbitrary category, defined in [3], in order to obtain the transfer of regularity in the sense of Zelmanowitz between the categories R−mod and S−mod, when S is an excellent extension of the ring R. Consequently, we obtain a result of [5]: if S is an excellent extension of the ring R, then S is von Neumann regular ring i...

It can, therefore, be assumed that NO− # could act as an indirect vasodilator. In an article recently published in Clinical Science, Demoncheaux et al. [1] have addressed this issue by performing sophisticated experiments in vitro with rings of pulmonary arteries, and reported that the concentration of NO− # derived from dissolved NO (NO solv ) in aqueous solutions of NaNO # at pH 7.4 cannot ac...

In the title compound, C(21)H(21)N(3)O(4)S, the cyclo-hexane ring adopts a chair conformation. The nitro and methyl-phenyl groups are all coplanar with the indole ring system. Intra-molecular N-H⋯O and C-H⋯S hydrogen bonds generate S(6) ring motifs. The mol-ecules form R(2) (2)(20) centrosymmetric dimers via inter-molecular C-H⋯O hydrogen bonds. A short O⋯O contact [2.842 (2) Å] is observed in ...

In the title compound, C(9)H(7)NO(2)S(2), the benzine ring is essentially co-planar with the thia-zole ring, making a dihedral angle of 0.36 (7)°. In the crystal structure, mol-ecules are linked by inter-molecular O-H⋯N hydrogen bonds between the carb-oxy group and the thia-zole N atom into chains along [10]. The chains are assembled into a supermolecular layer structure by thia-zole ring S⋯S c...

In the title compound, C(24)H(18)ClN(3)O(2)S, the dihedral angle between the benzene ring and the anthracene ring system is 41.10 (8)°. The thia-zine ring has a half-chair conformation and the Cl atom is in an axial orientation. In the crystal, mol-ecules are linked by C-H⋯O inter-actions, generating C(8) chains along [100]. A C-H⋯N short contact occurs in the mol-ecule, generating an S(6) ring.

The title compound, C27H34O2, was hemisynthesized through direct benzoyl-ation of the naturally occurring meroterpene totarol. The central fused six-membered ring has a half-chair conformation, whereas the terminal six-membered ring displays a chair conformation. The dihedral angle between the fused benzene ring and the benzoyl benzene ring is 73.05 (14)°. The S,S chirality of the mol-ecule is ...

In the title compound, C17H21N5S2, the dihedral angles between the central pyridine ring and its pendant imidazole rings are 29.40 (9) and 40.77 (9)°; the pendant rings are twisted in an opposite sense with respect to the central ring. In each case, the S atom is approximately anti to the N atom of the pyridine ring. For both substituents, the H atom attached to the central C atom of the isopro...