Homosecodaphniphyllic acid

Homosecodaphniphyllic acid, methyl ester, K26 Homoterpenyl methyl ketone, Tl Homothujadicarboxylic acid, T7 Hopane, T4S Hopeaphenol, YIS Hopenone I, T4S Humulene dioxide, T30 Humulene epoxides, T30 Humulenols, T30 Hunteracine, K14 Hunterbumine, K8 Huratoxin, T39 Hydrastines, K3 Hydratropic acid, A41 3j8-hydroxyallocholanic acid, T49 Hydroxycitric acid, A30... 

Homaline, K30 Homocamphor, T27 Homocaronic acids, A35 Homochasmanine, K9 Homochrysanthemic acids, A3 5 Homocitric acid, A26 Homoerythrina alkaloids, K7 Homolycorine, K6 Homopterocarpin, Y3 Homosecodaphniphyllic acid, methyl ester, K26... 

An asymmetric total synthesis of (—)-secodaphniphylline was carried out using a mixed Claisen condensation between (—)-methyl homosecodaphniphyllate (11) and a carboxylic acid derivative 154 with the characteristic 2,8-dioxabicyclo[3.2.1]octane structure commonly found in the daphniphyllum alkaloids (Scheme 18.23) [68,69]. The necessary chirality was secured by an asymmetric Michael addition reaction of... 

C.H. Heathcock and co-workers devised a highly convergent asymmetric total synthesis of (-)-secodaphniphylline, where the key step was a mixed Claisen condensation. In the final stage of the total synthesis, the two major fragments were coupled using the mixed Claisen condensation] the lithium enolate of (-)-methyl homosecodaphniphyllate was reacted with the 2,8-dioxabicyclo[3.2.1]octane acid chloride. The resulting crude mixture of (3-keto esters was subjected to the Krapcho decarboxylation procedure to afford the natural product in 43% yield for two steps. 

Methyl homosecodaphniphyllate, K26 Methyl isopulegene, A39 0-methyllactic acid, A1 Methyllanthionine, A9 jS-methylmalic acid, YS Methylmalonyl coenzyme-A, A28... 

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