The three-carbon alpha,alpha'-annulation of a sterically hindered cyclic beta-keto ester can be achieved by alkynylation with 3,3-diethoxypropyne, syn reduction of the alkyne with Co-2(CO)(8) and Et3SiH, and an intramolecular aldol reaction. The method is potentially useful for the synthesis of nemorosone, hyperforin, and other polycyclic polyprenylated acylphloroglucinols.
机构:
CALTECH, Arnold & Mabel Beckman Lab Chem Synthesis, Div Chem & Chem Engn, Pasadena, CA 91125 USACALTECH, Arnold & Mabel Beckman Lab Chem Synthesis, Div Chem & Chem Engn, Pasadena, CA 91125 USA
Chatterjee, AK
Sanders, DP
论文数: 0引用数: 0
h-index: 0
机构:
CALTECH, Arnold & Mabel Beckman Lab Chem Synthesis, Div Chem & Chem Engn, Pasadena, CA 91125 USACALTECH, Arnold & Mabel Beckman Lab Chem Synthesis, Div Chem & Chem Engn, Pasadena, CA 91125 USA
Sanders, DP
Grubbs, RH
论文数: 0引用数: 0
h-index: 0
机构:
CALTECH, Arnold & Mabel Beckman Lab Chem Synthesis, Div Chem & Chem Engn, Pasadena, CA 91125 USACALTECH, Arnold & Mabel Beckman Lab Chem Synthesis, Div Chem & Chem Engn, Pasadena, CA 91125 USA
机构:
CALTECH, Arnold & Mabel Beckman Lab Chem Synthesis, Div Chem & Chem Engn, Pasadena, CA 91125 USACALTECH, Arnold & Mabel Beckman Lab Chem Synthesis, Div Chem & Chem Engn, Pasadena, CA 91125 USA
Chatterjee, AK
Sanders, DP
论文数: 0引用数: 0
h-index: 0
机构:
CALTECH, Arnold & Mabel Beckman Lab Chem Synthesis, Div Chem & Chem Engn, Pasadena, CA 91125 USACALTECH, Arnold & Mabel Beckman Lab Chem Synthesis, Div Chem & Chem Engn, Pasadena, CA 91125 USA
Sanders, DP
Grubbs, RH
论文数: 0引用数: 0
h-index: 0
机构:
CALTECH, Arnold & Mabel Beckman Lab Chem Synthesis, Div Chem & Chem Engn, Pasadena, CA 91125 USACALTECH, Arnold & Mabel Beckman Lab Chem Synthesis, Div Chem & Chem Engn, Pasadena, CA 91125 USA