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The constitutions of the cucurbitacins

✍ Scribed by W.T. de Koch; P.R. Enslin; K.B. Norton; D.H.R. Barton; B. Sklarz; A.A. Bothner-By

Publisher: Elsevier Science
Year: 1962
Tongue: French
Weight: 324 KB
Volume: 3
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)70873-2

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✦ Synopsis

THE cucurbitacins are M interesting group of bitter the Cucurbitaceae.' A constitution (I) was recently cucurbitacin E. The related cucurbitacin B R = side chain). Cucurbitacins B, D, E and may be represented as in (II, I have all been correlated U.K. 13, Pennsylvania principles found in proposed* for previously. 3 The position of the ring C ketone group at Cl1 or Ci2 has not hitherto been established. We wish to present proof that the ketone is at Cii, to provide independent evidence for the constitution of cucurbitacin B and to propose constitutions for the biogenetically related1 cucurbitaeins A sndC.

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