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Am Efficient Synthetic Route to Chiral $\beta$-hydroxy-$\delta$-Lactone Moiety of Compactin
Jahng, Yurng-Dong,Kim, Jin-Il The Pharmaceutical Society of Korea 1991 Archives of Pharmacal Research Vol.14 No.2
A new synthetic sequence for the chiral lactone moiety of compactin was developed from $\alpha$-D-glucose in 9 steps via simultaneous reductive detosylation and epoxide-ring opening of 2, 3-epoxy-4-tosylate using NaBH_4$ to afford 2, 4-dideoxy sugar as a key intermediate.
Synthesis and Biological Activity of Conformationally Controlled 2-PAM Derivatives
Jahng, Yurng-Dong,Park, Jae-Gyu,Yoo, Jung-Whey,Kim, Sun-Young,Kim, Tae-An,Yang, Jae-Ho The Pharmaceutical Society of Korea 2000 Archives of Pharmacal Research Vol.23 No.3
A series of conformationally controlled 2-PAM derivatives were prepared from 2-acetylpyridine and 2,3-pyrido[b]cycloalkenones in two steps and their reactivities towards parathion poisoned AChE were evaluated. The most planar 2,3-pyrido[b]cyclohexanone oxime methiodide showed an activity comparable to 2-PAM Implying E-syn is that the most active comformation of 2-PAM in the biological system.
Properties of Ruthenium(Ⅱ) Complexes of 2, 2':6', 2""-Terpyridine-Related Systems
Jahng, Yurng Dong,Seoh, Byeong Chon 영남대학교 자원문제연구소 1990 資源問題硏究 Vol.9 No.-
The first unsymmetric terpyridine related ligand, 2-(2-pyridyl)-1, 10-phenanthroline(le), was prepared from 1, 10-phenanthroline in 5 steps, and converted to Ru(le)₂(PF6)₂. The redox potentials of this complex were determined to show a similiarity to those of Ru(phen)₃(원문참조), not those of Ru(tpy )₂(원문참조). The redox properties of the ruthenium complexes of 3, 3' ; 5', 3"bis-(polymethylene)-bridged 2, 2' ; 6', 2"-terpyridine (1b-d ) were also determined to show a sensitive probe of the conjugative interaction dependent on the relationship of the 2, 2' ; 6', 2"-terpyridine about the ruthenium atom. Although Ru(Ⅱ) complexes of the ligand, 1b-d. did not show any observable emission at room temperature, Ru(le)₂ shows one absorption maximum at 595 nm in aq. EtOH solution.
The reaction of (E)-2, 4-pentadienoic acid with aqueous bromine re-evaluation of the product
Jahng, Yurng-Dong,Kim, Jin-Il The Pharmaceutical Society of Korea 1989 Archives of Pharmacal Research Vol.12 No.3
The reaction of (E)-2, 4-pentadienoic acid with aqueous bromine was reinvestigated to affirm the formation of (E)-5-bromo-4-hydroxy-2-pentenoic acid, whose structure was confirmed by the spectroscopic methods as well as the chemical modification.
Jahng, Yurng-Dong,Kim, Jin-Il The Pharmaceutical Society of Korea 1994 Archives of Pharmacal Research Vol.17 No.2
trans-Ethyl 1, 2, 3, 4a, 5, 6, 8a-cotahydro-2-benzyl-4-hydroxy-6-methyl-5-isoquinoline-carboxylate was prepared by intramolecular Diels-Alder reaction as a precusor of newly designed aza-analogue of mevinolin.
연구논문 : 의약화학 ; COX 및 5-LOX에 대한 이중 억제 활성을 갖는 프로페논 모핵의 간단한 방향족 화합물의 합성
장영동 ( Yurng Dong Jahng ),조룡현 ( Long Xuan Zhao ),문윤수 ( Yoon Soo Moon ),알준바스넷 ( Arjun Basnet ),김은경 ( Eun Kyung Kim ),장현욱 ( Hyeun Wook Chang ),주혜경 ( Hye Kyung Ju ),정태천 ( Tae Cheon Jeong ),이응석 ( Eung Seok 영남대학교 약품개발연구소 2004 영남대학교 약품개발연구소 연구업적집 Vol.14 No.-
아드리아마이신의 유사제제 합성 (1) -안트라싸이클리논의 Isostere로서 Tetrahydrobenzo(b)phenazine 유도체의 합성-
장영동(Yurng Dong Jahng),장선영(Sun Young Chang) 대한약학회 1990 약학회지 Vol.34 No.4
7,8-Dihydro-6,11-dihydroxy-9(1OH)benzo(b)phenazinone was prepared from 1,2,3,4-tetra-hydrophenazine as a potential isostere of anthracyclinone. The attempts to functionalize at C9 were not successful due to the unstability of the above ketone.