نتایج جستجو برای: pyrrolidine
تعداد نتایج: 2347 فیلتر نتایج به سال:
The title compound, C30H28ClN3O2, features two spiro links, one connecting the piperidine and pyrrolidine rings, and the other connecting the pyrrolidine ring and indole residue. The configuration about the ethene bond is E. The piperidine ring adopts a half-chair conformation where the C atom connected to the spiro-C atom lies 0.713 (3) Å out of the plane of the remaining five atoms (r.m.s. de...
A small library of divalent fucosidase inhibitors containing pyrrolidine motifs and separated by polyamino and triazole-benzylated spacers was prepared and evaluated as α-fucosidase inhibitors. Although a weak multivalent effect was observed in polyamino derived dimers, useful structural information can be deduced about the length of the bridge, the number of nitrogen atoms present and the moie...
In the title compound, C27H28N2O4, the pyrrolidine ring adopts a twist conformation. The plane of the indole ring is almost perpendicular to that of the pyrrolidine ring, making a dihedral angle of 88.50 (6)°. The planes of the naphthyl ring system and the pyrrolidine ring are tilted by an angle of 55.86 (5)°. The mol-ecular conformation is stabilized by intra-molecular O-H⋯O and O-H⋯N hydrogen...
In this study, 2-(N-pyrrolidine-alkyl) tanshinones bearing pyrrolidine groups were synthesized and the antibacterial mechanism was explored. These derivatives selectively elicited antibacterial activity against Gram-positive bacteria. Moreover, their antibacterial activities were time-, concentration-dependent and persistent. It appeared that Fenton-mediated hydroxyl radicals were involved, and...
Sphingomonas melonis TY utilizes nicotine as a sole source of carbon, nitrogen, and energy through a variant of the pyridine and pyrrolidine pathways (VPP). A 31-kb novel nicotine-degrading gene cluster, ndp, in strain TY exhibited a different genetic organization with the vpp cluster in strains Ochrobactrum rhizosphaerae SJY1 and Agrobacterium tumefaciens S33. Genes in vpp were separated by a ...
In the title compound, C(29)H(26)N(2)O(2), one of the pyrrolidine rings in the pyrrolizine system is disordered, with site occupancies of ca 0.55 and 0.45. Both components of the disordered pyrrolidine ring adopt envelope conformations, whereas the other pyrrolidine ring adopts a twist conformation. The mol-ecules are linked into centrosymmetric dimers by N-H⋯O hydrogen bonds and the dimers are...
Two new pyrrolidine alkaloids, broussonetines G and H, were isolated from the branches of Broussonetia kazinoki SIEB. (Moraceae). Broussonetines G and H were formulated as 2 beta-hydroxymethyl-3 alpha, 4 beta-dihydroxy-5 alpha-(1-hydroxy- 6:10;10:13-diepoxytridecyl)-pyrrolidine (1) and 2 beta-hydroxymethyl-3 alpha, 4 beta-dihydroxy-5 alpha-(1-hydroxy- 5:9;9:13-diepoxytridecyl)-pyrrolidine (2), ...
In the title compound, C(18)H(17)N(5), the pyrrolidine ring adopts an envelope conformation. The pyrrolidine ring is disordered over two sets of sites with occupancy factors of 0.648 (6) and 0.352 (6). The dihedral angles between the pyrrolidine and pyridine rings are 14.6 (3)° for the major component and 16.2 (6)° for the ninor component. The crystal structure is stabilized by inter-molecular ...
Numerous heterocyclic compounds containing 3-pyrroline-2-one or pyrrolidine-2,3-dione core have been found in nature and showed valuable biological activities. Therefore, the synthesis of derivatives attracted more attention from organic chemists medicinal chemists. In this manuscript, 4-acetyl-3-hydroxy-1-(3-nitrophenyl)-5-phenyl-3-pyrroline-2-one has prepared via three-component reaction and,...
In the title mol-ecule, C(12)H(16)INO(2)S, the pyrrolidine ring is in an envelope conformation. The dihedral angle between the four essentially coplanar atoms of the pyrrolidine ring and the benzene ring is 75.5 (4)°.
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