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이상협 ( Sang Hyeup Lee ),( Balaji L. Korbad ) 대구가톨릭대학교 자연과학연구소 2012 자연과학연구논문집 Vol.10 No.1
Natural quorum sensing molecules and related structural analogues is of significant biological interest in the development of methods to manipulatebacterial quorum sensing systems in a useful manner. therefore, here we report synthesis of N-sulphonated and acylated homoserine lactone derivatives. Many of these molecules are synthesized based around the structures of known, native bacterial auto-inducers. And these molecules will be tested for quorum sensing activity.
이상협 ( Sang Hyeup Lee ) 대구가톨릭대학교 자연과학연구소 2009 자연과학연구논문집 Vol.7 No.1
The condensation of aliphatic and aromatic aldehydes with malonic acid in the presence of ammonium formate as nitrogen source resulted racemic b-amino acids in good yields.
( Amarbayasgalan Nerguil ),이상협 ( Sang-hyeup Lee ) 대구가톨릭대학교 자연과학연구소 2020 자연과학연구논문집 Vol.18 No.1
In this work, we have synthesized a series of 5-alkoxy-l,2,4-Oxadiazole from azidoximes using Staudinger reaction followed by aza-Wittig reaction.
( Amarbayasgalan Nergui ),이상협 ( Sang-hyeup Lee ) 대구가톨릭대학교 자연과학연구소 2023 자연과학연구논문집 Vol.21 No.1
In this work, we will synthesize a tripeptide from L, D form amino acids with using coupling reaction for the above study.
δ-keto acid로 부터 rac-δ-amino acid의 합성
전유립 ( You-lip Jeon ),이상협 ( Sang-hyeup Lee ) 대구가톨릭대학교 자연과학연구소 2017 자연과학연구논문집 Vol.15 No.1
δ-Amino acid was synthesized in good yield by the reduction of 5-(hydroxyimino)- 5-phenylpentanoic acid that was synthesized from δ-Keto acids with hydroxyl amine and Et3N. The present study demonstrates how to synthesize of intermediate and δ-Amino acid.
이지훈 ( Ji-hoon Lee ),이상협 ( Sang-hyeup Lee ) 대구가톨릭대학교 자연과학연구소 2019 자연과학연구논문집 Vol.17 No.1
A series of N-(4-(2-(2-(2-(2 -mercaptoethoxy)ethoxy)ethoxy)ethoxy)phenyl)-2-((4- phenyl - 5 - (pyridin - 2 - y 1) - 4H -1,2,4 - triazol - 3 - y 1) thio) acetamideand their analogues were synthesized.
최민정 ( Min-jeong Choi ),이상협 ( Sang-hyeup Lee ) 대구가톨릭대학교 자연과학연구소 2018 자연과학연구논문집 Vol.16 No.1
The reaction of carbonyl compound with dimethyloxosulfonium methylide gives the isolable epoxide, which smoothly rearranges under thermal conditions to yield the four-membered cyclic ether. We now report on a convenient synthesis of 2-substituted derivatives, which the nucleophilic ring expansions of 2-mono- and 2,2-disubstituted epoxide with dimethyloxosulfonium methylide.
한현지 ( Han Hyun-ji ),이상협 ( Lee Sang-hyeup ) 대구가톨릭대학교 자연과학연구소 2021 자연과학연구논문집 Vol.19 No.1
Cyclic acetal is contained in natural molecules such as cellulose and is used in many organic synthesis. Among them, cyclic acetals with acyl group is mainly used for substitution reactions due to its easy conversion. In this work, we will synthesize cyclic acetal derivatives with acyl group from cyclic acetal precursors such as 3,4-dihydropyran or caprolactone.