نتایج جستجو برای: rs stereoisomeric group

تعداد نتایج: 1004891  

Journal: :iranian journal of mathematical chemistry 2016
s. fujita

stereoisograms of octahedral complexes are classified into five types (type i--typev) under the action of the corresponding rs-stereoisomeric group. their enumeration is accomplished in a type-itemized fashion, where fujita's proligand method developed originally for combinatorial enumeration under point groups (s. fujita, theor. chem. acc., 113, 73--79 (2005)) is extended to meet the requireme...

Stereoisograms of octahedral complexes are classified into five types (type I--typeV) under the action of the corresponding RS-stereoisomeric group. Their enumeration is accomplished in a type-itemized fashion, where Fujita's proligand method developed originally for combinatorial enumeration under point groups (S. Fujita, Theor. Chem. Acc., 113, 73--79 (2005)) is extended to meet the requireme...

2013
Shinsaku Fujita

A proof for the existence of five stereogenicity types, which has once been demonstrated intuitively by means of stereoisograms, is mathematically given on the basis of the five factor groups derived from RS-stereoisomeric groups. These factor groups are proved to correspond to five types of subgroups appearing in RS-stereoisomeric groups. Thereby, the relationship between the concept of chiral...

Journal: :Beilstein Journal of Organic Chemistry 2021

The efficient synthesis of two new stereoisomeric 3-aminocyclooctanetriols and their halocyclitol derivatives starting from cis,cis -1,3-cyclooctadiene are reported. Reduction cyclooctene endoperoxide, obtained by photooxygenation -1,3-cyclooctadiene, with zinc yielded a diol followed acetylation the hydroxy group, which gave dioldiacetate OsO 4 /NMO oxidation. cyclooctane prepared was converte...

Journal: :Molecules 2017
Pelayo Camps Tània Gómez Ane Otermin Mercè Font-Bardia

7a-(Methoxycarbonyl)-N-methyl-1,3a,5,6,7,7a-hexahydro-4H-1,4,6-(epiethane[1,1,2]triyl)indene-4,9-dicarboximide has been prepared through a modification of a previous synthetic sequence, in which the benzyloxymethyl hydroxyl protecting group has been replaced by methoxymethyl, to avoid the apparent formation of a benzyl ester derivative as a side product. The overall yield of the new synthetic s...

Journal: :Communications in Algebra 2018

A. Jebelli Javan A. Mahdavi, B. Darabighane, H. Staji K. Lotfi

This study was conducted to examine effects of resistant starch compared to fructooligosaccharide (FOS) and zinc bacitracin (ZnB), on performance and ileum morphology in broilers. The experiment groups included a control (basal diet with no additive; CON), four groups receiving different levels of resistant starch type 2 (1, 2, 3, and 4% added to basal diet; RS), a group receiving fructooligosa...

Journal: :Brain research bulletin 2010
Meltem Ozlen Dillioglugil Hale Maral Kir Cennet Demir Gul Ilbay Deniz Sahin Ozdal Dillioglugil Gonul Bambal Haluk Mekik Nurbay Ates

OBJECTIVES the aim of our study was to evaluate the activity of superoxide dismutase (SOD) and the levels of glutathione (GSH), malondialdehyde (MDA), and nitric oxide (NO) in liver and kidney tissues in a rat model of convulsive seizure induced by single and repeated doses of pentylenetetrazole (PTZ) and sound stimulation with key ringing. MATERIALS AND METHODS male Wistar adult rats (n=48),...

2017
Sung Gwe Ahn Soong June Bae Changik Yoon Yoon Jin Cha Hak Woo Lee Seung Ah Lee Joon Jeong

AIM The 21-gene recurrence score (RS) predicts a clinical benefit of chemotherapy for individuals with ER-positive/HER2-negative breast cancer. Using in vitro chemoresponse assay, we compared the chemosensitivity according to RS in these patients. METHOD Among the patients with Oncotype Dx assay, we identified 63 patients who had chemotherapy response assays to doxorubicin based on adenosine ...

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