101915-49-5Relevant articles and documents
A Formal Total Synthesis of (+/-)-9-Isocyanopupukeanane
Hsieh, Shu-Ling,Chiu, Chih-Tsao,Chang, Nein-Chen
, p. 3820 - 3823 (1989)
The tricyclo3,7>decanol 21, a key intermediate in the Yamamoto's synthesis of 9-isocyanopupukeanane (1), is prepared in racemic form in 11 steps from the readily available ketone 5.The crucial steps include anionic oxy-Cope rearrangement of an endo-vinylnorbornenol 11 and cyclization of keto mesylate 16 to ketone 17.
Microbiological Asymmetric Hydroxylation of 7-Carboxybicycloheptane and hept-2-ene and Their Methyl Esters Giving Potentially Useful Chiral Synthons for Cyclopentanoids
Yamazaki, Yoshimitsu,Maeda, Hidekatsu
, p. 3203 - 3214 (2007/10/02)
One hundred and nineteen strains of microorganisms (yeast, bacteria, actinomycetes and fungi) were screened as to the hydroxylation of bicycloheptane-7-carboxylic acid, bicyclohept-2-ene-7-syn-carboxylic acid, and their methylesters.Several species belonging to the genera, Bacillus, Streptomyces, Penicillium, Aspergillus, Absidia, Beauveria, Cunninghamella, Drechslera, Mucor and Chaetomium, were found to asymmetrically hydroxylate some or all of the substrates.Bacillus thuringiensis and Aspergillus awamori were the most effective microorganisms for obtaining the chiral products, (1R)-2-hydroxy acids or esters,with enantiomeric purities of 75-90percent e.e., which are potentional intermediates for (-)-methyl jasmonate or natural prostaglandins.