Stereoselective Synthesis by Olefin Metathesis and Characterization of η-Carotene (7,8,7′,8′-tetrahydro-β,β-carotene)
作者:Noelia Fontán、Rosana Alvarez、Angel R. de Lera
DOI:10.1021/np300230t
日期:2012.5.25
The purported structure of the elusive η-carotene (7,8,7′,8′-tetrahydro-β,β-carotene), a natural C40 carotenoid first detected in the berries of Lonicera japonica and in citrus fruits sixty years ago, has been synthesized by olefin cross-metathesis/dimerization of a C21 polyene derived from trans-7,8-dihydroretinal, thus allowing the full characterization of this highly unstable natural product.