Justin Kim et al.
Journal of the American Chemical Society, 133(38), 14940-14943 (2011-08-31)
Concise and enantioselective total syntheses of (+)-naseseazines A and B are described. Our regioselective and directed dimerization of diketopiperazines provides their critical C3-C(sp(2)) linkages, an assembly with plausible biogenetic relevance. We revise the absolute stereochemistry of (+)-naseseazines A and B.
Katherine M Bogle et al.
Organic letters, 12(6), 1252-1254 (2010-02-24)
The total synthesis of (+/-)-powelline (13 linear steps in an overall yield of 6%) and (+/-)-buphanidrine (14 linear steps and a 6% overall yield) and has been achieved using a novel approach to the crinane skeleton. An organocatalytic oxidative coupling...
Organotin triflate as practical catalyst for Michael addition of enol silyl ethers.
Sato T, et al.
Tetrahedron, 47(47), 9773-9782 (1991)