[1]BioorganicandMedicinalChemistryLetters,1997,vol.7,p.1811-1816
[2]Patent:US2006/229361,2006,A1.Locationinpatent:Page/Pagecolumn44
161855-50-1 
 
194995-47-6 
 
(4R,5S,6S)-6-((R)-1-Hydroxy-ethyl)-3-{(2R,3R)-2-(1-isobutyryloxy-ethoxycarbonylamino)-methyl-tetrahydro-furan-3-ylsulfanyl}-4-methyl-7-oxo-1-aza-bicyclo3.2.0hept-2-ene-2-carboxylicacid 
[1]BioorganicandMedicinalChemistryLetters,1997,vol.7,p.1811-1816
[1]BioorganicandMedicinalChemistryLetters,1997,vol.7,p.1811-1816
194995-47-6 
 
(4R,5S,6S)-6-((R)-1-Hydroxy-ethyl)-3-{(2R,3R)-2-(1-isobutyryloxy-ethoxycarbonylamino)-methyl-tetrahydro-furan-3-ylsulfanyl}-4-methyl-7-oxo-1-aza-bicyclo3.2.0hept-2-ene-2-carboxylicacidethoxycarbonyloxymethylester 
[1]BioorganicandMedicinalChemistryLetters,1997,vol.7,p.1811-1816
[1]Patent:WO2005/19163,2005,A2.Locationinpatent:Page/Pagecolumn78