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Diterpenoid total synthesis, an a→b→c approach V. Total synthesis of d1-carnosol dimethyl ether and d1-carnosic acid dimethyl ether

✍ Scribed by D.Craig Shew; Walter L. Meyer

Publisher: Elsevier Science
Year: 1968
Tongue: French
Weight: 125 KB
Volume: 9
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)89623-9

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✦ Synopsis

We recently reported total synthesis of the ethyl eeter dimethyl ether of carnoric acid (I) (l), which is unusual among tricyclic diterpenoida in containing an angular aarboxyl function.

We now report a new method for construction of the 11,12-dihydroxylated C-ring in this system. The new approach is advantageous in that a lengthy requence for introduction of

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