Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

2-O-Benzhydryl-3,4-(S)-O-benzyl-idene-d-lyxono-1,4-lactone.

ABSTRACT: X-ray crystallography unequivocally showed that protection of the free hydroxyl group of 3,5-O-benzyl-idene-d-lyxono-1,4-lactone with diphenyl-diazo-methane proceeded with retention of configuration to give the title compound, C(25)H(22)O(5). The crystal structure consists of layers of inter-locked mol-ecules lying parallel to the a axis.

SUBMITTER: Jenkinson SF

PROVIDER: S-EPMC2914987 | biostudies-literature | 2008 Dec

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Publications

2-O-Benzhydryl-3,4-(S)-O-benzyl-idene-d-lyxono-1,4-lactone.

Jenkinson Sarah F SF Rule Sebastian D SD Booth Kathrine V KV Fleet George W J GW Watkin David J DJ Petursson Sigthor S

Acta crystallographica. Section E, Structure reports online 20081206 Pt 1

X-ray crystallography unequivocally showed that protection of the free hydroxyl group of 3,5-O-benzyl-idene-d-lyxono-1,4-lactone with diphenyl-diazo-methane proceeded with retention of configuration to give the title compound, C(25)H(22)O(5). The crystal structure consists of layers of inter-locked mol-ecules lying parallel to the a axis. ...[more]

PMID: 21200976

Similar Datasets

2-O-Benzhydryl-3,4-(S)-O-benzyl-idene-d-xylono-1,4-lactone.

Project description:X-ray crystallography unequivocally shows that protection of the free hydroxyl group of 3,5-O-benzyl-idene-d-xylono-1,4-lactone with diphenyl-diazo-methane proceeded smoothly to give the title compound, C(25)H(22)O(5), with no accompanying epimerization. Unlike the analogously protected lyxono lactone, the isomeric xylono lactone has two mol-ecules present in the asymmetric unit (Z' = 2). The 5-ring lactones adopt envelope conformations and the 6-ring ketals adopt chair conformations.

| S-EPMC2961596 | biostudies-literature

N,N'-Bis(3,4-dimethoxy-benzyl-idene)butane-1,4-diamine.

Project description:The title Schiff base compound, C(22)H(28)N(2)O(4), was synthesized by the reaction of 3,4-dimethoxy-benzaldehyde and 1,4-diamino-butane in methanol. The mol-ecule is located on a center of inversion with one half-mol-ecule in the asymmetric unit. Both C=N double bonds are in a trans configuration. Inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into a three-dimensional network.

| S-EPMC2977286 | biostudies-literature

2,3-O-(S)-Benzyl-idene-2-C-methyl-d-ribono-1,4-lactone.

Project description:The crystal structure of the title compound, C(13)H(14)O(5), establishes (i) the (S) - rather than (R) - configuration at the acetal carbon and (ii) that both the acetal and the lactone form five- rather than six-membered rings; the absolute configuration is determined by the use of 2-C-methyl-d-ribono-1,4-lactone as the starting material. The compound consists of hydrogen-bonded chains of mol-ecules running along the a axis; there are no unusual packing features. Only classical hydrogen bonding has been considered.

| S-EPMC2969893 | biostudies-literature

N'-(3,4-Dimethoxy-benzyl-idene)acetohydrazide.

Project description:In the title mol-ecule, C(11)H(14)N(2)O(3), the acetohydrazide group is planar 0.084 (1) Å and forms a dihedral angle of 19.7 (1)° with the benzene ring. One of the meth-oxy groups is coplanar with the attached benzene ring within 0.052 (3) Å, whereas the other is slightly twisted [C-O-C-C = 6.3 (3)°]. The mol-ecule adopts a trans configuration with respect to the C=N bond. In the crystal, the mol-ecules are linked into chains along the a axis by N-H⋯O hydrogen bonds and the chains are cross-linked into a three-dimensional network by C-H⋯O hydrogen bonds.

| S-EPMC2977411 | biostudies-literature

N'-(3,4-Dihydroxy-benzyl-idene)acetohydrazide.

Project description:In the title compound, C(9)H(10)N(2)O(3), the Schiff base mol-ecule is approximately planar, the dihedral angle between the benzene ring and the acetohydrazide group (r.m.s. deviation = 0.034 Å) being 8.81 (7)°. An intra-molecular O-H⋯O hydrogen bond is observed. In the crystal, mol-ecules are linked into a three-dimensional network by O-H⋯O, N-H⋯O and C-H⋯O hydrogen bonds.

| S-EPMC2970026 | biostudies-literature

3-O-Benzhydryl-2,5-dide-oxy-2,5-imino-2-C-methyl-l-lyxono-1,4-lactone.

Project description:The title bicyclic lactone, C(19)H(19)NO(3), is an inter-mediate in the synthesis of chiral α-methyl-prolines and branched C-methyl pyrrolidines; the absolute configuration was determined by the use of d-erythronolactone as the starting material. It exhibits no unusual crystal packing features, and each mol-ecule acts as a donor and acceptor for one C-H⋯O hydrogen bond.

| S-EPMC2959362 | biostudies-literature

N'-(3,4-Dimethoxy-benzyl-idene)aceto-hydrazide.

Project description:The asymmetric unit of the title compound, C(11)H(14)N(2)O(3), contains two independent mol-ecules with close conformations; the C=N-N-C torsion angle is 176.4?(1)° in both mol-ecules. In the crystal, inter-molecular N-H?O and C-H?O hydrogen bonds link the mol-ecules into chains running along the [01] direction.

| S-EPMC2977217 | biostudies-literature

N'-(3,4-Dihydroxy-benzyl-idene)acetohydrazide monohydrate.

Project description:In the title compound, C(9)H(10)N(2)O(3)·H(2)O, the Schiff base mol-ecule is approximately planar, the dihedral angle between the benzene and acetohydrazide planes being 5.40 (7)°. An intra-molecular O-H⋯O hydrogen bond is observed. In the crystal, mol-ecules are linked into a two-dimensional network parallel to (100) by O-H⋯O, N-H⋯O, O-H⋯N and C-H⋯O hydrogen bonds, and by π-π inter-actions between symmetry-related benzene rings [centroid-centroid distance = 3.543 (2) Å].

| S-EPMC2977139 | biostudies-literature

(2Z)-2-Benzyl-idene-4-n-butyl-3,4-di-hydro-2H-1,4-benzo-thia-zin-3-one.

Project description:In the title compound, C19H19NOS, the six-membered hetero-cyclic ring of the benzo-thia-zine fragment exhibits a screw boat conformation. The plane of the fused benzene ring makes a dihedral angle of 72.38 (12)° with that of the terminal phenyl ring, and is nearly perpendicular to the mean plane formed by the atoms through the n-butyl chain, as indicated by the dihedral angle of 88.1 (2)°. In the crystal, mol-ecules are linked by C-H⋯O inter-actions to form supra-molecular chains along [110].

| S-EPMC4051051 | biostudies-literature

2-[(E)-3,4-Dimeth-oxy-benzyl-idene]hydrazinecarboxamide.

Project description:In the title compound, C(10)H(13)N(3)O(3), the 3,4-dimeth-oxy-benzyl-idene and hydrazinecarboxamide groups are oriented at a dihedral angle of 53.82 (6)° and an intra-molecular N-H⋯N hydrogen bond generates an S(5) ring motif. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds into sheets propagating in (-201), which feature R(1) (2)(5), R(2) (2)(8) and R(2) (4)(14) loops.

| S-EPMC3379314 | biostudies-literature

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data