Synthesis of 10,11-Didehydro Cinchona Alkaloids and Key Derivatives

ChemInform Abstract: Synthesis of 10,11-

ChemInform Abstract: Synthesis of 10,11-Didehydro Cinchona Alkaloids and Key Derivatives.

✍ Wilfried M. Braje; Jens Frackenpohl; Olaf Schrake; Rudolf Wartchow; W. Beil; H. 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 31 KB 👁 1 views

An improved synthesis of 10,11-didehydro

An improved synthesis of 10,11-didehydro Cinchona alkaloids

✍ Karol M. Kacprzak; Wolfgang Lindner; Norbert M. Maier 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 202 KB 👁 1 views

## Abstract A revised procedure for the conversion of the four major __Cinchona__ alkaloids (quinine, quinidine, cinchonidine, and cinchonine) into their respective 10,11‐didehydro derivatives is described. The reported protocol offers several advantages over a recently published synthetic route. T

Synthesis of Cinchona Alkaloids

✍ Yuichi Kobayasi; Tsuyoshi Itoyama 📂 Article 📅 2007 🏛 John Wiley and Sons ⚖ 11 KB 👁 1 views

Cinchona Alkaloids in Synthesis and Cata

Cinchona Alkaloids in Synthesis and Catalysis || Cinchona-Catalyzed NucleophilicÎ±-Substitution of Carbonyl Derivatives

✍ Song, Choong Eui 📂 Article 📅 2009 🏛 Wiley-VCH Verlag GmbH & Co. KGaA 🌐 German ⚖ 497 KB 👁 1 views

Part One -- Cinchona Alkaloid Derivatives As Chirality Inducers In Metal-catalyzed Reactions -- Part Two -- Cinchona Alkaloid Derivatives As Chiral Organocatalysts -- Part Three -- Organic Chemistry Of Cinchona Alkaloids -- Part Four -- Cinchona Alkaloid And Their Derivatives In Analytics. Edited By

Cinchona Alkaloids in Synthesis and Cata

Cinchona Alkaloids in Synthesis and Catalysis || Resolution of Racemates and Enantioselective Analytics by Cinchona Alkaloids and Their Derivatives

✍ Song, Choong Eui 📂 Article 📅 2009 🏛 Wiley-VCH Verlag GmbH & Co. KGaA 🌐 German ⚖ 816 KB

Part One -- Cinchona Alkaloid Derivatives As Chirality Inducers In Metal-catalyzed Reactions -- Part Two -- Cinchona Alkaloid Derivatives As Chiral Organocatalysts -- Part Three -- Organic Chemistry Of Cinchona Alkaloids -- Part Four -- Cinchona Alkaloid And Their Derivatives In Analytics. Edited By

Conformational Studies of (±)-11,12-Dide

Conformational Studies of (±)-11,12-Didehydro-11-deoxycorynoline and (+)-11,13-Didehydro-11-deoxychelidonine, Hexahydrobenzo[c]phenanthridine-Type Alkaloid Derivatives, by X-Ray Crystal Structure and NMR Analyses

✍ Miyoko Kamigauchi; Yukiko Maekawa; Chisato Tode; Yasuko In; Toshimasa Ishida 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 German ⚖ 253 KB

## Abstract The X‐ray crystal analyses of the two 11‐deoxy‐didehydrohexahydrobenzo[__c__]phenanthridine‐type alkaloid derivatives **3** and **4**, derived from (±)‐corynoline (**1**) and (+)‐chelidonine (**2**), established their structures as (±)‐(5b__RS__,12b__RS__)‐5b,12b,13,14‐tetrahydro‐5b,13‐