DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Kang, Sung-Ho | - |
dc.contributor.advisor | 강성호 | - |
dc.contributor.author | Kim, Mi-Hyong | - |
dc.contributor.author | 김미형 | - |
dc.date.accessioned | 2011-12-13T04:46:57Z | - |
dc.date.available | 2011-12-13T04:46:57Z | - |
dc.date.issued | 1999 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=151664&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/31805 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 화학과, 1999.2, [ ii, 46 p. ] | - |
dc.description.abstract | A stereoselective synthesis of the key intermediate 8 of 1β-methylcarbapenem antibiotics was accomplished. The key features of the scheme include the stereoselective iodoamidation of Z-olefinic allylic alcohol 76 and the regioselective ring opening of aziridine 80c with cyanide. Z-olefinic allylic alcohol 76 was prepared by Wittig reaction of phosphonium salt 74 and aldehyde 71, then transformed into the desired cis-aziridine 80c by stereoselective iodoamidation, acidic hydrolysis and cyclization in sequence. Aziridine 80c was ring-opened with moderate regioselectivity by cyanide in 70% yield employing the freshly generated LiCN-HMPA reagent. Formation of b-lactam 96 from amide 95 was unexpectedly accomplished by its treatment with di-t-butyl dicarbonate. The prepared b-lactam 96 was detosylated at low temperature, then the primary hydroxy group was unmasked. Azitidinone alcohol 33 was converted into the desired product 8 by oxidation with PDC. | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | beta-lactam | - |
dc.subject | Aziridine | - |
dc.subject | Iodoamidation | - |
dc.subject | β-methylcarbapenem | - |
dc.subject | Imidate | - |
dc.subject | 이미데이트 | - |
dc.subject | 베타락탐 | - |
dc.subject | 아지리딘 | - |
dc.subject | 요오드아미드화반응 | - |
dc.subject | 1베타-메틸카바페넴 | - |
dc.title | Synthesis of a key intermediate to 1β-methylcarbapenem antibiotics via iodoamidation | - |
dc.title.alternative | 요오드아미드화반응을 이용한 항생제 1베타-메틸카바페넴의 중요중간체의 합성 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 151664/325007 | - |
dc.description.department | 한국과학기술원 : 화학과, | - |
dc.identifier.uid | 000973088 | - |
dc.contributor.localauthor | Kang, Sung-Ho | - |
dc.contributor.localauthor | 강성호 | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.