139517-65-0Relevant articles and documents
Application of the Suzuki Biphenyl Synthesis to the Natural Products Biphenomycin and Vancomycin
Brown, Allan G.,Crimmin, Michael J.,Edwards, Peter D.
, p. 123 - 130 (2007/10/02)
The synthesis of the unsymmetrical biphenyls 10 and 25 has been carried out by the palladium(0) catalysed coupling of the aryl boronic derivatives 5 and 20 with the aryl bromides 9 and 23 derived from (R)-4-hydroxyphenylglycine and (S)-tyrosine.In the former case unsuccessful attempts were made to bring about cyclization to compound 4 which is an analogue of the biphenyl ring system found in vancomycin.In the latter case, a variety of cyclization methods were used to give the cyclic products 34 and 35 which are analogues of the biphenomycin antibiotics.
