41977-20-2Relevant articles and documents
Diels–Alder reaction of two green chiral precursors. Approach to natural product like structures
Carrau, Gonzalo,Veiga, Nicolas,Suescun, Leopoldo,Giri, Germán F.,Suárez, Alejandra G.,Spanevello, Rolando,González, David
, p. 4791 - 4794 (2016)
Diels–Alder cycloaddition between an enantiomerically pure protected cis-cyclohexadiene diol metabolite and optically pure levoglucosenone derived from cellulose gave rise to complex pentacyclic natural product like structures in a chemically succinct pro
Stereoselective hydrogenation of methylcyclohex-2-ene-1,4-diols used in the synthesis of ampelomins and deoxy-carbasugars
Lagreca, María Eugenia,Carrera, Ignacio,Seoane, Gustavo A.,Brovetto, Margarita
, p. 853 - 856 (2015/03/03)
Stereoselective hydrogenation of methylcyclohex-2-ene-1,4-diols used as important intermediates for the preparation of ampelomins and deoxy-carbasugars was studied. These olefins were obtained in few steps from a chiral cis-diol resulting from microbial oxidation of toluene. Although the stereoselective hydrogenation of this type of substrates is difficult, high yields were obtained for heterogeneous hydrogenation using Adam's catalyst, where steric hindrance controlled the stereochemical outcome of the process. On the other hand, for homogeneous hydrogenation of similar olefins using Crabtree's catalyst, coordination with the allylic alcohols allowed for a controlled hydrogen addition from the more hindered face. In this manner two protocols for the hydrogenation of these types of substrates resulting in complementary stereoselectivities are described.
Concise chemoenzymatic synthesis of gabosine A, ent-epoformin and ent-epiepoformin
Labora, Maitia,Schapiro, Valeria,Pandolfi, Enrique
scheme or table, p. 1705 - 1707 (2012/01/05)
An efficient methodology has been developed to synthesize three related enantiomerically pure natural and unnatural compounds, based on a chemoenzymatic approach. We confirmed the usefulness of 3-methyl-cis-1,2-cyclohexadienediol derived from a biotransfo