- LINEAR DITERPENOIDS FROM CYSTOSEIRA BALEARICA
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From the brown alga Cistoseira balearica we have isolated, in addition to previously reported acyclic diterpenoids, two new compounds (eleganonal and iso-elegagonal).Their structures have been elucidated by spectral analysis and chemical correlation. - Key Word Index: Cystoseira balearica; Phaeophyta; Cystoseiraceae, diterpenoids, eleganonal -13-oxo3,7,11,15-tetramethylpentadeca-2,6,10,14-tetraenal>; iso-eleganonal .
- Amico, Vincenzo,Neri, Placido,Piattelli, Mario,Ruberto, Giuseppe
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- Studies on the synthesis of elegan-type linear diterpenes: The efficient total syntheses of eleganolone, eleganolone acetate, elegandiol, eleganonal, and epoxyeleganolone
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The first total syntheses of five elegan-type linear diterpenes- eleganolone (1), eleganolone acetate (2), elegandiol (3), eleganonal (4), and epoxyeleganolone (5)-were accomplished starting from (E,E)-farnesol (6) via four to six steps, successively, with high overall yield. The key step was the alkylation reaction of silyl cyanide with allylic iodide.
- Li,Lan,Liu,Li
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