529-05-5Relevant articles and documents
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Vichnewski,W.,Gilbert,B.
, p. 2563 - 2566 (1972)
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Romo et al.
, p. 5625 (1968)
ARTENOLIDE - A NEW DISESQUITERPENOID FROM Artemisia absinthium
Ovezdurdyev, A.,Abdullaev, N. D.,Yusupov, M. I.,Kasymov, Sh. Z.
, p. 553 - 556 (1987)
A new sesquiterpene lactone, artenolide - C30H40O8, mp 163-174 deg C (ethanol) - has been isolated from the epigeal part of Artemisia absinthium L.On the basis of an analysis of spectral characteristics (IR, mass, and 1H and 13C NMR spectra) of the lactone itself and of a transformation product, a diguaiane structure is suggested for artenolide.
ARTAUSIN - A NEW SESQUITERPENE LACTONE FROM Artemesia austriaca
Adekenov, S. M.,Aituganov, K. A.,Golovtsov, N. I.
, p. 127 - 128 (1987)
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Yusupov et al.
, (1979)
de Villiers
, p. 2049,2052 (1961)
Romo de Vivar et al.
, p. 3903 (1967)
ISODEHYDROCOSTUS LACTONE AND ISOZALUZANIN C, TWO GUAIANOLIDES FROM SAUSSUREA LAPPA
Kalsi, P. S.,Sharma, Sunila,Kaur, Gurdeep
, p. 1993 - 1996 (1983)
Two new guaianolides have been isolated from Saussurea lappa as minor components and have been named isodehydrocostus lactone and isozaluzanin C.A structure has been assigned to isodehydrocostus lactone on the basis of spectral data and correlation with estafiatin.The 1H NMR data and dehydrogenation studies show that the other highly crystalline guaianolide is isomeric with zaluzanin C.Earlier 3β-H-zaluzanin C has however been reported to occur as a colourless oil.Key Word Index-Saussurea lappa; Compositae; sesquiterpene lactone; guaianolides; dehydrocostus lactone; eremanthine; estafiatin; zaluzanin C; isozaluzanin C; isodehydrocostuslactone.
Approach to the blues: A highly flexible route to the azulenes
Carret, Sebastien,Blanc, Aurelien,Coquerel, Yoann,Berthod, Mikael,Greene, Andrew E.,Depres, Jean-Pierre
, p. 5130 - 5133 (2007/10/03)
(Chemical Equation Presented) A palette of blues: Chlorobicyclo-[5.3.0] decatrienones are readily prepared from cycloheptatrienes by cycloaddition of dichloroketene, ring expansion with a diazoalkane, and dehydrochlorination in dimethylformamide. These compounds are used as intermediates in the regiocontrolled synthesis of a wide variety of natural and nonnatural azulenes (see scheme).