1217498-98-0Relevant articles and documents
A convergent synthesis of triquinane sesterterpenes. Enantioselective synthesis of (-)-retigeranic acid A
Wright,Drtina,Roberts,Paquette
, p. 5806 - 5817 (1988)
The total synthesis of enantiomerically pure (-)-retigeranic acid A has been achieved in a convergent manner from (R)-(+)-pulegone and (S)-(-)-limonene. In the pivotal coupling step, the Grignard reagent derived from optically pure bromide 46 was found to
Synthesis and Chiroptical Properties of Some Piperidin-2-ones
Jackman, L. M.,Webb, R. Lee,Yick, H. C.
, p. 1824 - 1831 (2007/10/02)
The synthesis of optically pure (R)-(+)-4-isopropylpiperidin-2-one, (R)-(+)-4-isopropyl-4-methylpiperidin-2-one, and (R)-(+)-5-methylpiperidin-2-one in high yields from monocyclic terpene precursors are described.The CD spectra of these compounds are reported, and the chiroptical properties of δ-lactams are examined in terms of current theories for the amide chromophore.It is concluded that slight, conformationally induced nonplanarity of the amide chromophore is responsible for signs of the longest wavelenght bands in the CD spectra of these and related compounds.