Diterpenoid total synthesis, an A .far. B .far. C approach. VIII. Introduction of oxygen at carbon-11. Total synthesis of (+-)-carnosic acid dimethyl ether and (+-)-carnosol dimethyl ether
Diterpenoid total synthesis, an A .far. B .far. C approach. VIII. Introduction of oxygen at carbon-11. Total synthesis of (+-)-carnosic acid dimethyl ether and (+-)-carnosol dimethyl ether