Total Synthesis of (+)-Cryptocaryalactone and of a Diastereoisomer of (+)-Strictifolione<i>via</i>Ring-Closing Metathesis (RCM) and Olefin Cross-Metathesis (CM)
作者:Gowravaram Sabitha、Bhaskar Vangala、S. Siva Sankara Reddy、Jhillu S. Yadav
DOI:10.1002/hlca.200900170
日期:2010.2
Ring‐closing metathesis (RCM) and olefin cross‐metathesis (CM) reactions were used as the key steps for the synthesis of (+)‐cryptocaryalactone (1) and the first synthesis of the diastereoisomer 3 of (+)‐strictifolione, starting from the commercially available L‐malic acid (=(2S)‐2‐hydroxybutanedioic acid).
A new synthesis of (-)-(3S,6R)-3,6-dihydroxy-10-methylundecanoic acid, a β-hydroxy carboxylic acid, has been accomplished using a cross-metathesis reaction between two terminal olefin intermediates as the key step.
Stereoselective total synthesis of (+)-strictifolione and (6R)-6-[(4R,6R)-4,6-dihydroxy-10-phenyldec-1-enyl]-5,6-dihydro-2H-pyran-2-one by Prins reaction and olefin cross-metathesis
作者:Gowravaram Sabitha、Narjis Fatima、Peddabuddi Gopal、C. Nagendra Reddy、Jhillu S. Yadav
DOI:10.1016/j.tetasy.2008.12.004
日期:2009.2
Prins and olefin cross-metathesis reactions were used as the key steps for the stereoselective totalsynthesis of (+)-strictifolione and (6R)-6-[(4R,6R)-4,6-dihydroxy-10-phenyldec-1-enyl]-5,6-dihydro-2H-pyran-2-one. Removal of MOM protecting groups under neutral conditions using CeCl3·7H2O is an attractive addition to the present strategy.