886221-02-9Relevant academic research and scientific papers
Synthesis of the norjatrophane diterpene (-)-15-acetyl-3-propionyl-17- norcharaciol
Helmboldt, Hannes,Koehler, Daniel,Hiersemann, Martin
, p. 1573 - 1576 (2006)
A scalable enantioselective synthesis of the nonnatural 17-norjatrophane diterpene 3-propionyl-15-acetyl-17-norcharaciol is described. Key C/C-connecting transformations are an Evans aldol reaction, an intramolecular carbonyl ene reaction, a Horner-Wadsworth-Emmons olefination, and a ring-closing metathesis for the formation of a 12-membered carbacycle.
Synthetic studies toward jatrophane diterpenes from Euphorbia characias. enantioselective synthesis of (-)-15-O-Acetyl-3-O-propionyl-17-norcharaciol
Helmboldt, Hannes,Hiersemann, Martin
scheme or table, p. 1698 - 1708 (2009/10/02)
The enantioselective synthesis of (+)-17-norcharaciol is described. An uncatalyzed intramolecular carbonyl-ene reaction and a ring-closing metathesis were used as key C/C-connecting transformations to assemble the trans-bicyclo[10.3.0]pentadecane norditerpenoid core. We also report the evolution of our synthetic strategy toward the fully substituted characiol skeleton and the experiences from this venture.
