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Hou, Xiyan,Lee, Hyuk-Woo,Tosh, Dilip K.,Zhao, Long Xuan,Jeong, Lak-Shin 대한약학회 2007 Archives of Pharmacal Research Vol.30 No.10
Improved syntheses of potent and selective $A_3$ adenosine receptor agonists, CI-IB-MECA and thio-CI-IB-MECA were accomplished from cheap stating material, D-ribose. New synthetic methods were found to be superior to old methods from the viewpoint of use of cheap starting material, number of steps, and overall yields.
Wang, Ting,Lee, Hyun Joo,Tosh, Dilip K.,Kim, Hea Ok,Pal, Shantanu,Choi, Sun,Lee, Yoonji,Moon, Hyung Ryong,Zhao, Long Xuan,Lee, Kang Man,Jeong, Lak Shin 이화여자대학교 약학연구소 2008 藥學硏究論文集 Vol.- No.18
5'-Deoxy-5'-ureidoadenosine was designed and synthesized as a potent inhibitor of S-adenosylhomocysteine hydrolase(SAH), in which 5'-ureido group as multiple hydrogen bonding donor in binding with active site residues of SAH in the molecular modeling study.
Xiyan Hou,Hyuk Woo Lee,Dilip K. Tosh,Long Xuan Zhao,Lak Shin Jeong 대한약학회 2007 Archives of Pharmacal Research Vol.30 No.10
Improved syntheses of potent and selective A3 adenosine receptor agonists, Cl-IB-MECA and thio-Cl-IB-MECA were accomplished from cheap stating material, D-ribose. New synthetic methods were found to be superior to old methods from the viewpoint of use of cheap starting material, number of steps, and overall yields.
Lak Shin, Jeong,Dilip K. Tosh,Won Jun, Choi,Sang Kook, Lee,You-Jin, Kang,Sun, Choi,Jin Hee, Lee,Hankil, Lee,Hyuk Woo, Lee,Hea Ok, Kim 이화여자대학교 약학연구소 2010 藥學硏究論文集 Vol.- No.20
The first synthesis of 2'-deoxy-2'-fluoro-4'-selenoarabinofuranosyl pyrimidines as potent anticancer agents was accomplished using the DAST fluorination as a key step. It was first revealed that selenium atom participated in the DAST fluorination of 4'-selenonucleosides and that conformational bias induced by bulky selenium acted as a decisive factor in the DAST fluorination. Among compounds tested, 2'-F-4'-seleno-ara-C (4a) exhibited highly potent anticancer activity in all cancer cell lines tested and was more potent than ara-C (1).
Lee, Jeong A,Kim, Hea Ok,Tosh, Dilip K.,Moon, Hyung Ryong,Kim, Sanghee,Jeong, Lak Shin 이화여자대학교 약학연구소 2008 藥學硏究論文集 Vol.- No.17
◁화학식 삽입▷ (원문을 참조하세요) Stereoselective synthesis of 2´-C-methyl-cycloprophy-fused carbanucleosides was accomplished via stereoselective cyclopropanation, regioselective cleavage of the isopropylidene group, stereoselective Grignard reaction, and cyclic sulfate chemistry."
Asymmetric Synthesis of Cyclopropyl-fused 2'-C-Methylcarbanucleosides as Potential Anti-HCV Agents
Jeong, Lak Shin,Lee, Jeong A.,Kim, Hea Ok,Tosh, Dilip K.,Moon, Hyung Ryong,Lee, Seung-Jin,Lee, Kang Man,Sheen, Yhun Y.,Chun, Moon Woo Taylor Francis 2007 NUCLEOSIDES NUCLEOTIDES AND NUCLEIC ACIDS Vol. No.
<P> Novel 2 '-C-methyl-cyclopropyl-fused carbocyclic nucleosides as potential anti-HCV agents were stereoselectively synthesized, utilizing regioselective cleavage of the isopropylidene group and cyclic sulfate chemistry as key steps.</P>
Stereoselective Synthesis of 1'-Functionalized-4'-Thionucleosides
Jeong, Lak Shin,Gunaga, Prashantha,Kim, Hea Ok,Tosh, Dilip K.,Lee, Hyuk Woo,Choe, Seung Ah,Moon, Hyung Ryong,Gao, Zhan-Guo,Jacobson, Kenneth A.,Chun, Moon Woo Taylor Francis 2007 NUCLEOSIDES NUCLEOTIDES AND NUCLEIC ACIDS Vol. No.
<P> Stereoselective functionalization of the 1'-position of 4'-thionucleosides was achieved using a stereoselective SN2 reaction controlled by 5-membered ring coordination.</P>