1995-09 | AN EXPEDIENT ENTRY TO CEPHALOSPORIN DERIVATIVES WITH CYCLIC SUBSTITUENTS AT THE 3-POSITION BY [3+2] CYCLOADDITION REACTIONS | KANG, HY; CHO, YS; KOH, HY; CHANG, MH |
1992-10-20 | CONSTRUCTION OF CONTIGUOUS QUATERNARY CARBON CENTERS BY INTRAMOLECULAR ADDITION OF TERTIARY RADICALS TO ACTIVATED OLEFINS | KANG, HY; CHO, YS; KOH, HY; CHANG, MH; HWANG, JT; SHIM, SC |
1989-02 | INTRAMOLECULAR CYCLIZATION OF ALLYLIC PROPIOLATES MEDIATED BY THE ADDITION OF STANNYL RADICALS - A NEW SYNTHETIC ROUTE TO ALPHA-METHYLENE-GAMMA-BUTYROLACTONES | LEE, E; KO, SB; JUNG, KW; CHANG, MH |
1990-08 | INTRAMOLECULAR REDUCTIVE CYCLIZATION OF ALDEHYDES AND KETONES WITH ALKYNES PROMOTED BY SAMARIUM(II) IODIDE | SHIM, SC; HWANG, JT; KANG, HY; CHANG, MH |
1990-12-20 | NEW AMINOTHIAZOLYL CEPHALOSPORINS - SYNTHESIS AND BIOLOGICAL EVALUATION OF 7-[ALKOXYIMINOMETHYL(2-AMINOTHIAZOL-4-YL)ACETAMIDO]CEPH-3-EM-4-CARBOXYLI C ACIDS | KOH, HY; KANG, HY; CHOI, KI; CHANG, MH |
1991-09-15 | PREPARATION OF E-ALPHA-ARYLIDENE-GAMMA-BUTYROLACTONES AND Z-ALPHA-ARYLIDENE-GAMMA-BUTYROLACTONES FROM Z-ALPHA-STANNYLMETHYLENE-GAMMA-BUTYROLACTONES - STEREOSELECTIVE SYNTHESIS OF (+/-)-SAVININ AND (+/-)-GADAIN | LEE, E; HUR, CU; JEONG, YC; RHEE, YH; CHANG, MH |
1994-09-20 | SAMARIUM(II) IODIDE PROMOTED INTRAMOLECULAR COUPLING BETWEEN CARBONYL GROUPS AND ACTIVATED OLEFINS UNDER STERICALLY CROWDED ENVIRONMENT | KANG, HY; KOH, HY; CHANG, MH; HWANG, JT; SHIM, SC |
1994-06-20 | SEMIEMPIRICAL MOLECULAR-ORBITAL CALCULATIONS OF THE SUBSTITUENT EFFECTS ON ACYLATIONS OF 3-CEPHEM ANALOGS | CHANG, MH; KOH, HY; LEE, JC; LEE, YS |
1995-11 | STUDIES ON NEW CATECHOL CONTAINING CEPHALOSPORINS .1. SYNTHESIS AND STRUCTURE-ACTIVITY-RELATIONSHIPS OF CEPHALOSPORINS HAVING A CATECHOL MOIETY AT THE C-3 POSITION | CHOI, KI; CHA, JH; PAE, AN; CHO, YS; KANG, HY; KOH, HY; CHANG, MH |
1995-11 | STUDIES ON NEW CATECHOL CONTAINING CEPHALOSPORINS .2. SYNTHESIS AND STRUCTURE-ACTIVITY-RELATIONSHIPS OF CEPHALOSPORINS HAVING A CATECHOL MOIETY AT THE C-7 POSITION | CHOI, KI; CHA, JH; PAE, AN; CHO, YS; KANG, HY; KOH, HY; CHANG, MH |
1991-02-20 | SYNTHESIS AND BIOLOGICAL EVALUATIONS OF N-(2-SUBSTITUTED-1-CARBOXYL) VINYLAZETIDINONES - A STUDY ON THE ESSENTIAL STRUCTURAL ELEMENT FOR BIOLOGICAL-ACTIVITIES OF BETA-LACTAM ANTIBIOTICS | KANG, HY; PAE, AN; KOH, HY; CHANG, MH |
1993-01 | SYNTHESIS OF 3-ALKYLIDENECEPHAM-4-CARBOXYLIC ACID-DERIVATIVES BY SAMARIUM(II) IODIDE REDUCTION | KANG, HY; CHO, YS; KOH, HY; CHANG, MH |