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Volumn 44, Issue 6, 2005, Pages 854-885

The quest for quinine: Those who won the battles and those who won the war

Author keywords

Alkaloids; Asymmetric synthesis; History of chemistry; Quinine; Structural determination

Indexed keywords

DISEASES; STEREOCHEMISTRY; SYNTHESIS (CHEMICAL);

EID: 13744263775     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200400663     Document Type: Review
Times cited : (194)

References (438)
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    • The four scientists received the Nobel Prize for Medicine or Physiology: Sir Ronald Ross (1902) "for his work on malaria, by which he has shown how it enters the organism and thereby has laid the foundation for successful research on this disease and methods of combating it"; Camillo Golgi (1906, shared with Santiago Ramón y Cajal) "in recognition of their work on the structure of the nervous system"; Charles Louis Alphonse Laveran (1907) "in recognition of his work on the role played by protozoa in causing diseases"; and Paul Hermann Müller (1948) "for his discovery of the high efficiency of DDT as a contact poison against several arthropods".
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    • b) deadly fevers-most probably malaria-have been recorded since the beginning of the written word; for example, references can be found in the Vedic writings of 1600 BC in India and by Hippocrates some 2500 years ago.
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    • During the period 1772-1786 cinchona bark was so expensive that it served as a distinguished gift; the Spanish presented the bark to the Empress of Hungary, the Pope Clemens XIV, the Duke of Parma, the Electress of Baviera, and the General Commissioner of the Sacred Places in Jerusalem.
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    • a) From 38 known cinchona species, only 4 are of commercial interest: C. calisaya, C. ledgeriana, C. succirubra, and C. officinalis; they have different quinine content, from 7 to 15% and their complex taxonomy was not stabilized until the 1990s;
  • 47
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    • b) the term cinchona was coined by the Swedish botanist Linnaeus in 1742, perhaps to honor the Countess of Chinchon after hearing the tale of her cure from malaria. In 1866 the International Botanical Congress opted to keep the error in the spelling. The first botanical description of the tree made by Linnaeus was based on drawings of the French geographer and explorer Charles Marie de La Condamine, member of the French Geodesic Expedition of 1735;
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    • c) after the isolation of quinine, the industrial procedure adopted for its mass production consisted of extracting pulverized bark with toluene in the presence of alkali, back-extracting the alkaloids from toluene into diluted sulfuric acid, then carefully neutralizing, and collecting the crystals of quinine sulfate,
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    • d) The availability of quinine in a pure state allowed a better study of the alkaloid. Pasteur tried to employ the natural product as a resolving agent,
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    • e) Pasteur reported the formation of quinotoxine, with the aid of which he carried out the first resolution ever made, see: L. Pasteur, Compt. Rend. 1853, 37, 110 and L. Pasteur, Liebigs Ann. Chem. 1853, 88, 209.
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    • e) Pasteur reported the formation of quinotoxine, with the aid of which he carried out the first resolution ever made, see: L. Pasteur, Compt. Rend. 1853, 37, 110 and L. Pasteur, Liebigs Ann. Chem. 1853, 88, 209.
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    • a) In the 1850s the East India Company alone spent £100000 annually on cinchona bark, but even with this level of expenditure it could not keep the colonists healthy,
  • 64
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    • b) Nearly half of the admissions to St Thomas's Hospital in London in 1853 were smitten with the "ague",
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    • c) John Eliot Howard became an expert on the chemistry of quinine, with his expertise recognized by his appointment as Fellow of the Royal Society; his factory produced more than 4 tons of quinine in 1854.
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    • d) During the American Civil War, more soldiers died of malaria than in battle in the southern states.
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    • e) Malaria decimated military strength in many battles during the 18th and the early 19th century; for example, thousands of British troops succumbed to it while fighting Napoleon in 1809.
  • 68
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    • f) Without antimalarial drugs, the political shape of the world might have been very different from what we see today; access to dependable sources of reasonably priced quinine decisively helped European exploration of Africa and its colonialization. The great explorer David Livingstone called quinine "the most constipating of drugs". It causes constipation, but indeed, without quinine he and others would probably have succumbed to malaria much sooner than he did.
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    • note
    • g) The building of the Panama Canal came to a halt in 1889 when malaria and yellow fever struck.
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    • note
    • For example, the Frenchman Charles Marie de La Condamine sailed the Amazon river with cinchona seedlings, but his boat was wrecked where the Amazon flows into the Atlantic Ocean. His countryman and colleague of the French Geodesic Expedition, the Botanist Joseph de Jussieu collected plant samples and seeds, which were stolen in Buenos Aires a short time before his planned departure to Europe. The Botanist Weddel obtained some specimens of Cinchona calisaya, which he gave to the Dutch, who planted them in the Ciboda Gardens in Java.
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    • g) small-scale syntheses of mauveine were reported by: R. L. Scaccia, D. Coughlin, D. W. Ball, J. Chem. Educ. 1998, 75, 769 and by T. M. Brown, C. J. Cooksey, A. T. Dronsfield, Educ. Chem. 2000, 37, 75.
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    • g) small-scale syntheses of mauveine were reported by: R. L. Scaccia, D. Coughlin, D. W. Ball, J. Chem. Educ. 1998, 75, 769 and by T. M. Brown, C. J. Cooksey, A. T. Dronsfield, Educ. Chem. 2000, 37, 75.
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    • For an image of a piece of silk dyed with an original batch of mauveine prepared by Perkin himself, see: H. S. Rzepa, Molecules 1998, 3, 94.
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    • The structure of quinotoxine was first documented by Rabe in 1909, see: P. Rabe, Liebigs Ann. Chem. 1909, 365, 366.
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    • b) Rabe's original numbering of the cinchona alkaloids skeleton is used today.
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    • The quinine supply, principally from the bark of the cinchona tree grown in Java, was interrupted during WWI, and the Germans mounted a research program to find and synthesize useful substitutes. Chloroquine and atabrine (mepacrin(e), a compound with some chemical similarities to quinine, resulted from these investigations. In spite of its side effects and tendency to impart a sickly color to the skin, atabrine was the standard american antimalarial drug during WWII.
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    • b) the Nobel Prize was awarded to Prelog "for his research into the stereochemistry of organic molecules and reactions".
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    • b) Prelog's reconstitution of quinotoxine was based on the assumption that the Rabe protocol was suitable for the synthesis of quinine.
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    • The hype of that glorious moment was such that over four days Woodward and Doering re-enacted each step of their synthesis in front of a photographer, showing glassware, apparatus, crystalline products, and even molecular models of the intermediates. The journalist Gerard Piel, who covered this accomplishment, perhaps influenced by Woodward, developed an active interest in science and went on to found the modern journal Scientific American.
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    • I get sick thinking of the details, but we worked fourteen months - February first, 1943, to April eleventh, 1944, at eleven AM sharp - Boy what a moment!
    • W. E. Doering, "I get sick thinking of the details, but we worked fourteen months-February first, 1943, to April eleventh, 1944, at eleven AM sharp-Boy what a moment!", quoted in New Yorker, 1944, May 13, 20.
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    • In the 1945 fullpaper, Woodward and Doering state: "It was then found that it was possible to effect the reconversion first to cinchotoxine, and later of quinotoxine, into cinchonine and quinine. Quinotoxine was converted by action of sodium hypobromite into N-bromoquinotoxine, which was cyclized by alkali, with loss of hydrogen bromide, to give quininone. Reduction of the ketone with aluminum powder and ethanol in the presence of sodium ethoxide gave a mixture of stereoisomeric alcohols, from which both quinine and quinidine were isolated"; later in the paper, they add: "There remained the task of carrying out a total synthesis of quinine. The problem had been simplified by the work described above to one of the synthesis of quinotoxine. Further, at the outset of our work, it seemed highly probable, in view of the conversion by Rabe of homocincholoipon (dihydrohomomeroquinen(e) to dihydroquinotoxine, that homomeroquinene would be transformable to quinotoxine, and accordingly our efforts were directed to the synthesis of [homomeroquinene]. This further simplification of the synthetic objective was subsequently established by Prelog, who prepared homomeroquinene by degradation of natural cinchonine, and converted it, by Rabe's method, to quinotoxine".
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    • b) for a review on the use of cinchona alkaloids in asymmetric synthesis, see: K. Kacprzak, J. Gawronski, Synthesis 2001, 961;
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    • c) about 25% of the resolutions recorded in the chemical literature have been carried out with cinchona alkaloids.
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    • a) The cis configuration of the 3,4-disubstituted piperidine was confirmed more than 20 years after its synthesis by Stork, see: R. J. Sundberg, F. Hollcomb, J. Org. Chem. 1969, 34, 3273;
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    • b) for a summary of the major achievements in regio- and stereocontrolled synthesis by Stork's research group, see: G. Stork, Med. Res. Rev. 1999, 19, 370.
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    • c) for an interesting comment on Stork's synthesis, see: S. M. Weinreb, Nature 2001, 411, 429.
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    • Chem. Eng. News 2001, 79(19), 56.
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    • Gutzwiller and Uskokovic were able to produce an inseparable mixture of
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    • The use of microwaves resulted in shorter reaction times, see: (a) R. T. Brown, D. Curless, Tetrahedron Lett. 1986, 27, 6005;
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    • note
    • a) The multigram total synthesis of the novel anticancer agent and polyketide lactone (+)-discodermolide is one of the most recent proofs of the power of modern synthetic chemistry and the industrial use of reagents and reactions developed by academic research; as in the case of quinine, it also shows that " a new drug candidate is sufficiently valuable, synthetic chemists will rise to the challenge of developing a viable synthetic approach no matter how complex the structure".[195a]
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    • note
    • b) The supply of (+)-discodermolide needed for development cannot be met through the isolation and purification from its natural source, a sponge that must be harvested using manned submersibles; furthermore, attempts to reproducibly isolate a discodermolide-producing microorganism for fermentation have not been successful to date. A chemical synthesis was, therefore, considered as the best option for accessing multigram quantities of this compound.


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