The aerial parts of Inula verbascifolia afforded two new guaianolide-type sesquiterpene lactones. Their structures were determined by spectroscopic methods (IR, MS, 1H NMR, 13C NMR, DEPT, 1H-1H COSY, HMQC, and HMBC).

Address: Department of Gynecology and Obstetrics, Montasariya Infertility Center, Mashhad University of Medical Sciences, Mashhad, Iran Tel: +98 511 8534021 Email: [email protected] همدقم : ناـمز رد نز بارطـضا حطـس لـثم يرـيغتم لـماوع هب هتسباو دناوت يم يروراب كمك نامرد تيقفوم دشاب نامرد . راب نانز بارطضا و يگدرسفا ريثات يبايزرا يارب هعلاطم نيا يروراـب كـمك ناـمرد دمايپ رب رو تسا هدش يحارط ...

The 1H and 13C NMR spectra of the neo-clerodane diterpenoid scutecyprin were completely assigned by using a combination of 2D NMR experiments, which included 1H-1H COSY, HSQC, HMBC and NOESY sequences.

Target molecules based on Adamantane-pyrido[2,3-d]pyrimidine derivatives were prepared. series using N-(hydroxyadamantan-1-yl)-5-(2,4-substitutedphenyl)-2-Methyl-4-Oxo-7-(2-oxo-2H-Chromen-3-yl)pyrido[2,3-d]Pyrimidine-3(4H)carboxamide (6a-j) was synthesized by reaction between 3-(2-chloroacetyl)-5-(2,4-substitutedphenyl)-2-Methyl-7-(2-Oxo-2H-Chromen-3-yl) pyrido[2,3-d]pyrimidin-4(3H)-one (5a-j) ...

We study a series of intermolecular hydrogen-bonded 1 : 1 complexes formed by chloroacetic acid with 19 substituted pyridines and one aliphatic amine dissolved in CD2Cl2 at low temperature by 1H and 13C NMR and FTIR spectroscopy. The hydrogen bond geometries in these complexes vary from molecular (O-HN) to zwitterionic (O-H-N+) ones, while NMR spectra show the formation of short strong hydrogen...

Twelve N-glycosyl amines were synthesised using 4,6-O-benzylidene-D-glucopyranose and different substituted aromatic amines, including some diamines that resulted in bis-glycosyl amines. Another set of six N-glycosyl amines was synthesised using different hexoses and pentoses and 2-(o-aminophenyl)benzimidazole. All compounds were isolated as solid products and purified, their elemental composit...

Prevalence to the various biological activities of imidazo[4,5-b] pyridine nucleus has promoted us for an attempt of one pot synthesis of (1H, 3H) imidazo [4,5-b] pyridines (desazopurines) as inhibitors of Lumazine synthase in M. tuberculosis (PDB 2C92). Major advantage of Lumazine synthase enzyme behind consideration as target protein in docking study is its absence in mammalian cell but prese...

Polysaccharide processing by means of low-temperature Electron Beam Plasma (EBP) is a promising alternative to the time-consuming and environmentally hazardous chemical hydrolysis in oligosaccharide production. The present paper considers mechanisms of the EBP-stimulated destruction of crab shell chitin, cellulose sulfate, and microcrystalline cellulose, as well as characterization of the produ...

3-1. 1a–Pd Complexes 8 3-1-1. Detailed NMR of 1a for peak assignments 8 3-1-2. Detailed NMR of 1a/Pd for peak assignments 10 3-1-3. Detailed NMR of (1a)2/Pd for peak assignments 13 3-1-4. Stacked 1H and 13C NMR of 1a, 1a/Pd, and (1a)2/Pd 17 3-2. 1b–Pd Complex 19 3-2-1. Detailed NMR of 1b for peak assignments 19 3-2-2. Detailed NMR of (1b)2/Pd for peak assignments 23 3-2-3. Stacked 1H and 13C NM...

Production of renewable and modified starch-based products was achieved using a sustainable catalyst an environmentally friendly drying process via supercritical CO2. Potato starch green esterification with acetic anhydride reagent implementing novel organocatalytic pathway at different periods time (0.5, 3 7 h) by applying reaction 120°C targeting intermediate degrees substitution (i.e., 0.2 <...