The Experts below are selected from a list of 3 Experts worldwide ranked by ideXlab platform
A. F. M. M. Rahman - One of the best experts on this subject based on the ideXlab platform.
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Crystal structure of dibromomethoxyseselin (DBMS), a photobiologically active Pyranocoumarin
International Union of Crystallography, 2017Co-Authors: A. K. Bauri, Sabine Foro, A. F. M. M. RahmanAbstract:The title compound, C15H14Br2O4 [systematic name: rac-(9S,10R)-3,9-dibromo-10-methoxy-8,8-dimethyl-9,10-dihydropyrano[2,3-h]chromen-2(8H)-one], is a Pyranocoumarin Derivative formed by the bromination of seselin, which is a naturally occurring angular Pyranocoumarin isolated from the Indian herb Trachyspermum stictocarpum. In the molecule, the benzopyran ring system is essentially planar, with a maximum deviation of 0.044 (2) Å for the O atom. The dihydropyran ring is in a half-chair conformation and the four essentially planar atoms of this ring form a dihedral angle of 4.6 (2)° with the benzopyran ring system. In the crystal, molecules are linked by weak C—H...O hydrogen bonds, forming chains propagating along [010]. In addition, π–π stacking interactions, with centroid–centroid distances of 3.902 (2) and 3.908 (2) Å, link the hydrogen-bonded chains into layers parallel to (001)
A. K. Bauri - One of the best experts on this subject based on the ideXlab platform.
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Crystal structure of dibromomethoxyseselin (DBMS), a photobiologically active Pyranocoumarin
International Union of Crystallography, 2017Co-Authors: A. K. Bauri, Sabine Foro, A. F. M. M. RahmanAbstract:The title compound, C15H14Br2O4 [systematic name: rac-(9S,10R)-3,9-dibromo-10-methoxy-8,8-dimethyl-9,10-dihydropyrano[2,3-h]chromen-2(8H)-one], is a Pyranocoumarin Derivative formed by the bromination of seselin, which is a naturally occurring angular Pyranocoumarin isolated from the Indian herb Trachyspermum stictocarpum. In the molecule, the benzopyran ring system is essentially planar, with a maximum deviation of 0.044 (2) Å for the O atom. The dihydropyran ring is in a half-chair conformation and the four essentially planar atoms of this ring form a dihedral angle of 4.6 (2)° with the benzopyran ring system. In the crystal, molecules are linked by weak C—H...O hydrogen bonds, forming chains propagating along [010]. In addition, π–π stacking interactions, with centroid–centroid distances of 3.902 (2) and 3.908 (2) Å, link the hydrogen-bonded chains into layers parallel to (001)
Sabine Foro - One of the best experts on this subject based on the ideXlab platform.
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Crystal structure of dibromomethoxyseselin (DBMS), a photobiologically active Pyranocoumarin
International Union of Crystallography, 2017Co-Authors: A. K. Bauri, Sabine Foro, A. F. M. M. RahmanAbstract:The title compound, C15H14Br2O4 [systematic name: rac-(9S,10R)-3,9-dibromo-10-methoxy-8,8-dimethyl-9,10-dihydropyrano[2,3-h]chromen-2(8H)-one], is a Pyranocoumarin Derivative formed by the bromination of seselin, which is a naturally occurring angular Pyranocoumarin isolated from the Indian herb Trachyspermum stictocarpum. In the molecule, the benzopyran ring system is essentially planar, with a maximum deviation of 0.044 (2) Å for the O atom. The dihydropyran ring is in a half-chair conformation and the four essentially planar atoms of this ring form a dihedral angle of 4.6 (2)° with the benzopyran ring system. In the crystal, molecules are linked by weak C—H...O hydrogen bonds, forming chains propagating along [010]. In addition, π–π stacking interactions, with centroid–centroid distances of 3.902 (2) and 3.908 (2) Å, link the hydrogen-bonded chains into layers parallel to (001)
