Some Expressions of a Generalized Version of the Expected Time in the Red and the Expected Area in Red

Methodology and Computing in Applied Probability - In this paper, we study a generalized version of the expected time in the red and the expected area in red introduced in Loisel (2005). We derive...     

Iridoids : on the synthesis and structure of specionin

Recently, structure $\text{8b}$ has been assigned to the iridoid specionin. In the present letter the total synthesis of $\text{8b}$ is described. Comparison of spectral data reveals that the final product is not identical with natural specionin. Therefore the original structural assignment of specionin must be revised.     

The synthesis of functionalized cis'-bicyclo ¦3.3.0¦octanes

A number of polyfunctionalized cis-bicycio ¦3.3.0¦octanes have been synthesized starting from the tricyclic key intermediate $\text{5}$ which was obtained by the intramolecular cyclopropanation reaction of the diazo keto ester $\text{4}$. Selected stereocontrolled transformations of $\text{5}$ using nucleophiles and electrophiles have been studied for the preparation of the title compounds.     

Photoinduced Wolff Rearrangement of α-Diazo-β-Ketophosphonates : A Novel Entry into Substituted Phosphonoacetates

Direct irradiation (254 nm) of α-diazo-β-ketophosphona-tes in the presence of an alcohol, leads to substituted phosphonoacetates. This allows a novel construction of the functionalized isopropyl group present in many ses-quiterpenes.     

Iridoids : Novel total synthesis of (±)- isoiridomyrmecin and of (±)-verbenalol

A novel synthesis of the iridoids (±)-isoiridomyrmecin $\text{1}$ and (±verbenalol $\text{2}$ is described starting from the tricyclo |3.3.0.0^2,8|octan-3-one $\text{3}$ using cis fused bicyclo |3.3.0|octenes as intermediates. The heterocyclic ring of the iridoids was formed in the final stages of the syntheses.