The main structural unit of the title compoud, C(21)H(18)O(6), is a fused three-ring group consisting of coumarin and tetra-hydro-pyrane ring systems. Two C atoms of the tetra-hydro-pyran ring are displaced by 0.295 (3) and -0.360 (2) Å from the mean plane of coumarin ring. The dihedral angle between the phenyl and coumarin rings is 73.94 (3)°. Inter-molecular O-H⋯O hydrogen bonds are present i...

In the title Schiff base, C(18)H(22)N(4)O, the hexa-hydro-pyrimidinyl ring adopts a chair conformation. The dihedral angle between the aromatic rings of the 4-(2-phenyl-diazen-yl)phenol unit is 15.7 (1)°. There is an intra-molecular O-H⋯N hydrogen bond between the hydroxyl group and an N atom of the hexa-hydro-pyimidinyl unit. Inter-molecular N-H⋯O and N-H⋯N hydrogen bonds give rise to a layer ...

In the title compound, C(27)H(25)NO(4), the tetra-hydro-pyridine ring adopts a half-chair conformation. The three phenyl rings form dihedral angles of 66.33 (7), 87.36 (8) and 36.90 (7)° with the least-squares plane through the tetra-hydro-pyridine ring. The mol-ecular conformation is stabilized by an intra-molecular O-H⋯O hydrogen bond, generating an S(6) motif.

In the title compound, C23H20ClN3O, each of the cyclo-hexene and 1,4-di-hydro-pyridine rings of the 1,4,5,6,7,8-hexa-hydro-quinoline ring system adopts a twisted-boat conformation. The dihedral angle between the two benzene rings is 11.52 (7)°. In the crystal, mol-ecules are linked through a pair of amino-nitrile N-H⋯N hydrogen bonds, forming inversion dimers. These assemble into a three-dimens...

Water canal networks that are widely used for irrigation an equally good source of micropower generation to be fed the nearby areas. A practical example such a system is micro-hydro at Renala Khurd Pakistan integrated with national grid known as hydro–grid configuration. Apart from rare hydro example, solar photovoltaic mainstream network, i.e., PV-Grid configuration, used. The operation combin...

In the title compound, C(24)H(21)ClN(4)O(2)S, the two adjacent spiro junctions link an almost planar (r.m.s. deviation = 0.017 Å) 2-oxindole ring, a hexa-hydro-1H-pyrrolizine ring and a tetra-hydro-imidazo[2,1-b]thia-zole ring. In the crystal, inversion dimers linked by pairs of N-H⋯N hydrogen bonds occur, generating an R(2) (2)(16) loop.

abstract aims: bovine mastitis continues to be the most costly disease to the dairy farmers. it dominates in iran as one of the most prevalent diseases in dairy cattle among the dairy farms. mastitis treatment with antibiotics leads to the development of antibiotic resistant strains and consumer health problem. this study was performed for the first time to analyze in vitro effects of hydro-alc...

background: corn silk (cs) is widely used in iranian traditional medicine. the aim of this study was to investigate hepatoprotective activity of cs by isolated rat liver perfusion system (irlp). methods: hydro-alcoholic extract of corn silk (10, 20, 40, and 100 mg kg-1) was evaluated for its hepatoprotective activity by irlp. phenol and flavonoid contents of the extract were determined as galli...

The title compound, C14H12BrNO4, has two chiral C atoms. The C atom next to the O atom in the di-hydro-furan ring has an S configuration, while the adjacent chiral C atom has an R configuration. The cyclo-hex-2-enone and di-hydro-furan rings both adopt envelope conformations, with the flap atoms (middle CH2 in cyclo-hex-2-enone and NO2-substituted C in di-hydro-furan) lying 0.612 (3) and 0.295 ...