Zobrazeno 1 - 10
of 3 175
pro vyhledávání: '"ureas"'
Autor:
Veronica Iuliano, Paolo Della Sala, Carmen Talotta, Margherita De Rosa, Carmine Gaeta, Placido Neri, Annunziata Soriente
Publikováno v:
Organics, Vol 5, Iss 2, Pp 32-45 (2024)
Chiral mono- and bis-(thio)urea supramolecular organocatalysts were studied in the enantioselective vinylogous addition reaction of 2-trimethylsilyloxyfuran (TMSOF) to carbonylic compounds; the corresponding chiral γ-hydroxymethyl-butenolides are ob
Externí odkaz:
https://doaj.org/article/ad7cd4d5f43b4708a6fee5a1e0fbea41
Autor:
Jurin Mladenka, Stepanić Višnja, Bojanić Krunoslav, Vadlja Denis, Kontrec Darko, Dražić Tonko, Roje Marin
Publikováno v:
Acta Pharmaceutica, Vol 74, Iss 1, Pp 37-59 (2024)
A diastereomeric mixture of racemic 3-phthalimido-b-lactam 2a/2b was synthesized by the Staudinger reaction of carboxylic acid activated with 2-chloro-1-methylpyridinium iodide and imine 1. The amino group at the C3 position of the b-lactam ring was
Externí odkaz:
https://doaj.org/article/199e7ac933ef4756b379fef727260399
Autor:
Fatemeh Abbasi, Ali Reza Sardarian
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-21 (2024)
Abstract In the current report, we introduce a simple, mild efficient and green protocol for N-formylation and N-acetylation of anilines using formamide, formic acid, and acetic acid as inexpensive, nontoxic, and easily available starting materials j
Externí odkaz:
https://doaj.org/article/d5e72cf7e71c4b09ac9169f259ceea2d
Publikováno v:
Molecules, Vol 29, Iss 23, p 5687 (2024)
This publication reports a facile and convenient preparation of tri-O-acetyl-glucopyranoses, derived from the corresponding 2-deoxyaminosugar, where the vicinal anomeric and C2 positions are decorated by azido and (thio)ureido groups, respectively. T
Externí odkaz:
https://doaj.org/article/180fca6c71dc453c9efb8b7c35856aee
Publikováno v:
SynOpen, Vol 07, Iss 04, Pp 555-558 (2023)
Externí odkaz:
https://doaj.org/article/989ee3375d9b4f7abe6e4d0882e9f31c
Autor:
Desheng Su, Hualin Chen, Qihao Yang, Hao Liu, Mengting Lv, Yayun Zhao, Junjie Zhou, Qiuju Zhang, Zhiyi Lu, Liang Chen
Publikováno v:
Journal of CO2 Utilization, Vol 83, Iss , Pp 102793- (2024)
The development of efficient processes for value-added utilization of low-concentration CO2 is an on-going challenge. In this work, we present a sequential system based on diamine platforms for the direct utilization of low-concentration sources of C
Externí odkaz:
https://doaj.org/article/266ac2d28405406a925bb9e92f9115b0
Publikováno v:
Applied Microbiology, Vol 3, Iss 3, Pp 605-628 (2023)
β-Lactams in the last thirty years have been viewed as universal acylating agents of serine and cysteine enzymes of both prokaryotic and eukaryotic systems. More recently, their use has been propelled by the COVID-19 pandemic, thus broadening their
Externí odkaz:
https://doaj.org/article/9a7ebebdcd75492ab84c024583f4a6eb
Autor:
Gulim K. Mukusheva, Roza I. Jalmakhanbetova, Altynay Zh. Shaibek, Manshuk S. Nurmaganbetova, Aigerym R. Zhasymbekova, Oralgazy A. Nurkenov, Ekaterina A. Akishina, Irina A. Kolesnik, Evgenij A. Dikusar, Tatiana I. Terpinskaya, Vladimir A. Kulchitsky, Vladimir I. Potkin, Alexander L. Pushkarchuk, Dmitry A. Lyakhov, Dominik L. Michels
Publikováno v:
Molecules, Vol 29, Iss 14, p 3246 (2024)
Alkaloid-based urea derivatives were produced with high yield through the reaction of anabasine and cytisine with isoxazolylphenylcarbamates in boiling benzene. Their antitumor activity, in combination with the commonly used five anticancer drugs, na
Externí odkaz:
https://doaj.org/article/35f2fdad02e346619def04b46e97ccc0
Publikováno v:
Molecules, Vol 29, Iss 10, p 2213 (2024)
In this paper, the preparation of three new polysaccharide-type chiral stationary phases (CSPs) based on levan carbamates (3,5-dimethylphenyl, 4-methylphenyl, and 1-naphthyl) is described. The enantioseparation of (±)-trans-β-lactam ureas 1a–h wa
Externí odkaz:
https://doaj.org/article/d88bad1242534c05a456aa9a12259019
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