Chemoenzymatic and enantiodivergent routes to 1,2-ring-fused bicyclo[2.2.2]octane and related tricyclic frameworks
作者:Kerrie A. B. Austin、Jon D. Elsworth、Martin G. Banwell、Anthony C. Willis
DOI:10.1039/b921600f
日期:——
New and simple protocols are described for the conversion of the enzymatically-derived and enantiomerically pure cis-1,2-dihydrocatechol 7 (X = I) and its 6-methylated derivative into either antipodal form of compounds embodying the tricyclic frameworks of terpenoids 1–6. Key steps include intramolecular Diels–Alder (IMDA) and (in some cases) singlet or triplet-based photochemical processes.
Enantioselective bacterial biotransformation routes to cis-diol metabolites of monosubstituted benzenes, naphthalene and benzocycloalkenes of either absolute configuration
作者:Christopher C. R. Allen、Derek R. Boyd、Howard Dalton、Narain D. Sharma、Ian Brannigan、Nuala A. Kerley、Gary N. Sheldrake、Stephen C. Taylor
DOI:10.1039/c39950000117
日期:——
Enzyme-catalysed kinetic resolution and asymmetric dihydroxylation routes to enantiopure cis-diol metabolites of arenes and benzocycloalkenes of either absolute configuration have been developed using appropriate strains of the bacterium Pseudomonas putida.
Chemoenzymatic Synthesis of the Enantiomer of 4,12-Dihydroxysterpurene, the Structure Assigned to a Metabolite Isolated from the Culture Broth of<i>Stereum purpureum</i>
作者:Ping Lan、Martin G. Banwell、Anthony C. Willis
DOI:10.1021/ol5034817
日期:2015.1.2
rearrangement of this to the cyclobutanone 2. By such means it has been established that 4,12-dihydroxysterpurene (1) is not the structure of the natural product isolated by Xie and co-workers from a culture broth of Stereum purpureum.
Stereodirecting substituent effects during enzyme-catalysed synthesis of cis-dihydrodiol metabolites of 1,4-disubstituted benzene substrates
作者:Derek R. Boyd、Narain D. Sharma、Mark V. Hand、Melanie R. Groocock、Nuala A. Kerley、Howard Dalton、Jagdeep Chima、Gary N. Sheldrake
DOI:10.1039/c39930000974
日期:——
The cis-dihydrodiol enantiomer preferentially formed, by dioxygenase-catalysed oxidation of 1,4-disubstituted benzene substrates in growing cultures of Pseudomonas putida UV4, is found to be largely controlled by the relative size of the substituents.
Total Synthesis of (+)-Viridianol, a Marine-Derived Sesquiterpene Embodying the Decahydrocyclobuta[<i>d</i>]indene Framework
作者:Fei Tang、Ping Lan、Benoit Bolte、Martin G. Banwell、Jas S. Ward、Anthony C. Willis
DOI:10.1021/acs.joc.8b02626
日期:2018.11.16
A totalsynthesis of the title sesquiterpene 4 is described that starts with the chiral, non-racemic cis-1,2-dihydrocatechol 10 obtained through the whole-cell biotransformation of p-iodotoluene. Compound 10 is elaborated over seven steps, including Negishi cross-coupling and intramolecular Diels–Alder (IMDA) cycloaddition reactions, to ketone 7 that engages in a photochemically promoted 1,3-acyl migration