Within the last year
Within the past 3 years
1 - 10 of 24 articles
New functionally substituted N- and P-containing salts of resinous and bile acids 1b, c, 2b-f, 3b-f, 4b-f, 5b, c , and 6b, c were prepared by reaction of the corresponding acids with amines or triphenylphosphine in anhydrous acetone.
Native and hydrolyzed fibroin of natural silk modified by benzimidazolyl-2-methylcarbamate hydrochloride was studied using IR spectroscopy, electron-microscopy, X-ray structure analysis, solubility, and dialysis. Mechanical treatment of a mixture of native and hydrolyzed fibroin of natural silk...
Seed characteristics and the lipid and fatty-acid compositions were determined for the new cotton varieties ASh-25, Omad, 9771-I, Termez-43, and Bukhara-6.
Naturally acetylated glucomannan with MW 31,000 and (α) D 20 -29.1° was isolated from bulbs of Narcissus tazetta L. Chemical methods and IR and 13 C NMR spectroscopies were used to show that the polysaccharide contains 12.9% O-Ac groups and consists of D-mannose and D-glucose in a 1:5.6 ratio...
The lipid composition of ripe and green fruit of Hibiscus esculenthus cultivated in Uzbekistan was studied. The fatty-acid composition of pod and seed lipids was determined. Carbohydrate components including water-soluble polysaccharides, pectinic substances, and hemicellulose were characterized.
Homologs of the natural isoflavonoid pseudobaptigenin containing benzodioxane and benzodioxepane fragments were synthesized. Methanesulfonyl, carbamoyl, aminomethyl, and coumarin-containing isoflavone derivatives were prepared.
Substituted 2-(7-oxofuro(3,2-g)chromen-6-yl) acetic acids, modified psoralen analogs, were synthesized by linear fusion of a furan ring to the coumarin system.
Narrow fractions of polyprenols isolated from birch (C 35 -C 45 ) and fir (C 70 -C 85 ) greenery were used to prepare esters of polyprenylacetic acids that exhibited high anti-ulcer activity comparable and in several instances exceeding that of the known anti-ulcer preparation omeprazole (omez).
Crystalline taraxasterol and its acetate were isolated for the first time from Onopordum acanthium . Two-dimensional COSY, HSQC, and HMBC NMR experimentswere carried out forcomplete assignment of signals in the PMR and 13 C NMR. Chemical shifts of stereochemically important methyl C atoms C-28...
Esters 1b-15b were prepared from cetyl alcohol 1a , terpenols 2a-6a , sterols 7a-10a , plant phenols 11a-13a , and alcohols 14a-15a by reaction with 1-adamantanecarboxylic acid chloride in the presence of pyridine.
Read and print from thousands of top scholarly journals.
Sign up with Facebook
Sign up with Google
Already have an account? Log in
Save this article to read later. You can see your Read Later on your DeepDyve homepage.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Sign Up Log In
To subscribe to email alerts, please log in first, or sign up for a DeepDyve account if you don’t already have one.
To get new article updates from a journal on your personalized homepage, please log in first, or sign up for a DeepDyve account if you don’t already have one.