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(S)-(-)-Methyl 2-(p-tolyl-sulfon-yloxy)-propanoate.

ABSTRACT: In the title compound, C(11)H(14)O(5)S, there is an intra-molecular C-H?O hydrogen bond, for which the C-C-S-O torsion angle involving the acceptor and donor atoms is 2.4?(4)°. The dihedral angle between the benzene ring and the methoxy-carbonyl plane is 52.7?(4)°. In the crystal structure, mol-ecules are linked via inter-molecular C-H?O hydrogen bonds, forming a mol-ecular chain along the b axis.

SUBMITTER: Chen W

PROVIDER: S-EPMC2961152 | biostudies-literature | 2008 Apr

REPOSITORIES: biostudies-literature

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(1R,3S,5R,6S)-6-Acet-oxy-8-methyl-3-(p-tolyl-sulfon-yloxy)-8-azoniabicyclo-[3.2.1]octane (2R,3R)-2,3-bis-(benzo-yloxy)-3-carboxy-propanoate.

Project description:The title compound, C(17)H(24)NO(5)S(+)·C(18)H(13)O(8) (-), is the key inter-mediate during the preparation of lesatropane [systematic name (1R,3S,5R,6S)-6-acetoxy-3-(4-methylphenylsulfonyloxy)tropane], a potential anti-glaucoma agent. The tertiary N atom of the tropane ring is involved in inter-molecular N-H⋯O hydrogen bonding, and the carboxylate groups are involved in inter-molecular O-H⋯O hydrogen bonding.

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Methyl 3-[(1-adamantylcarbon-yloxy)amino-carbon-yl]propanoate.

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Project description:The title compound, C17H19NO3S, was synthesized from 4-benzhydryl-idene-amino-12-hy-droxy-[2.2]para-cyclo-phane and methane-sulfonyl chloride. In the mol-ecule, the distance between the centroids of two aromatic rings is 2.960?(5)?Å. In the crystal, weak N-H?O and C-H?O hydrogen bonds link the mol-ecules into layers parallel to the ac plane.

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Project description:The title mol-ecule, C(26)H(30)O(9)S(3), adopts an extended conformation whereby two approximately parallel benzene rings [dihedral angle = 8.32?(10)°] are orientated in opposite directions along the pseudo-threefold axis through the central quaternary C atom, while a third ring occupies a position mid-way and face-on to these rings [dihedral angles = 82.28?(10) and 78.81?(7)°]. The crystal packing is dominated by C-H?O contacts and ?-? inter-actions [ring centroid distance = 3.6902?(12)?Å].

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Methyl (R)-2-(2-chloro-phen-yl)-2-(3-nitro-phenyl-sulfon-yloxy)acetate.

Project description:The reaction between methyl (R)-2-(2-chloro-phen-yl)-2-hy-droxy-acetate and 3-nitro-benzene-sulfonyl chloride gave the title compound, C(15)H(12)ClNO(7)S, which is a promising inter-mediate for the synthesis of Clopidrogel, an anti-platelet drug used in the prevention of strokes and heart attacks. In the crystal, mol-ecules are linked through C-H?O interactions, and there is also a short Cl?O contact present [Cl?O = 3.018?(2)?Å].

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(1R,3S,5R,6S)-6-Acet-oxy-3-(4-methyl-phenyl-sulfon-yloxy)tropane.

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1,2-Bis(p-tolyl-sulfon-yl)hydrazine.

Project description:In the title compound, C(14)H(16)N(2)O(4)S(2), the dihedral angle between the aromatic ring planes is 76.8 (3)° and the S-N-N-S torsion angle is 122.5 (3)°. In the crystal structure, mol-ecules form a chain structure by way of N-H⋯O hydrogen bonds.

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4-Phenyl-sulfon-yl-2-(p-tolyl-sulfon-yl)-1H,8H-pyrrolo-[2,3-b]indole.

Project description:The title compound, C(23)H(18)N(2)O(4)S(2), contains a pyrrolo group fused onto the plane of an indole ring with phenyl-sulfonyl and p-toluene-sulfonyl groups bonded to the indole and pyrrolo rings. The angles between the mean planes of the pyrrolo-indole ring and the phenyl-sulfonyl and p-toluene-sulfonyl rings are 73.7 (6) and 80.6 (0)°, respectively. The dihedral angle between the mean planes of the two benzene rings is 78.7 (4)°. In the crystal, both classical N-H⋯O and non-classical C-H⋯O inter-molecular hydrogen-bonding inter-actions are observed, as well as weak π-π inter-actions [centroid-centroid distances = 3.6258 (8) and 3.9298 (8) Å], which contribute to the stability of the packing.

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(2S)-Methyl 2-(p-toluenesulfonamido)propanoate.

Project description:The enanti-omerically pure title compound, C(11)H(15)NO(4)S, contains a pyramidal N atom with an S-N bond length of 1.6262?(8)?Å. In the crystal, mol-ecules are linked to form chains parallel to the a axis by the hydrogen bond from NH to the carbonyl oxygen. C-H?O inter-actions are also present.

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Project description:The title compound, C(17)H(15)NO, exists in a Z conformation. The dihedral angle between the O-bonded benzene ring and the vinyl plane is 80.97 (18)° while the dihedral angle between the rings is 80.06 (10)°. In the crystal structure, no classical hydrogen bonds occur.

| S-EPMC3393901 | biostudies-literature

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