Efficient and Practical Synthesis of a Potent Anti-MRSA β-Methylcarbapenem Containing a Releasable Side Chain
摘要:
We describe a convergent synthesis of the MRSA beta-methyl carbapenem 1, wherein the molecule is assembled from the naphthosultam side chain 2 and the allylic carbonate of the beta-Me carbapenem piece 6. The beta-Me stereochemistry of 6 is set up in a novel titanium enolate addition into the TBDMS acetoxy azetidinone 5. The benzenesulfonate salt of 1 is endowed with exceptional stability.
Efficient and Practical Synthesis of a Potent Anti-MRSA β-Methylcarbapenem Containing a Releasable Side Chain
摘要:
We describe a convergent synthesis of the MRSA beta-methyl carbapenem 1, wherein the molecule is assembled from the naphthosultam side chain 2 and the allylic carbonate of the beta-Me carbapenem piece 6. The beta-Me stereochemistry of 6 is set up in a novel titanium enolate addition into the TBDMS acetoxy azetidinone 5. The benzenesulfonate salt of 1 is endowed with exceptional stability.
Efficient and Practical Synthesis of a Potent Anti-MRSA β-Methylcarbapenem Containing a Releasable Side Chain
作者:Guy R. Humphrey、Ross A. Miller、Philip J. Pye、Kai Rossen、Robert A. Reamer、Ashok Maliakal、Scott S. Ceglia、Edward J. J. Grabowski、R. P. Volante、Paul J. Reider
DOI:10.1021/ja992486t
日期:1999.12.1
We describe a convergent synthesis of the MRSA beta-methyl carbapenem 1, wherein the molecule is assembled from the naphthosultam side chain 2 and the allylic carbonate of the beta-Me carbapenem piece 6. The beta-Me stereochemistry of 6 is set up in a novel titanium enolate addition into the TBDMS acetoxy azetidinone 5. The benzenesulfonate salt of 1 is endowed with exceptional stability.