1275595-33-9Relevant articles and documents
A LIGNAN FROM LINDERA PRAECOX
Ichino, Kazuhiko,Tanaka, Hitoshi,Ito, Kazuo
, p. 1906 - 1907 (1988)
A new 2,6-diaryl-3,7-dioxabicyclooctane lignan, praderin, was isolated from the leaves of Lindera praecox.Key Word Index-Lindera praecox; Lauraceae; lignan; praderin; isomagnolin; philligenin.
Total synthesis of (±)-epimagnolin A
Brown, Richard C.D.,Bataille, Carole J.R.,Hinks, Jeremy D.
, p. 473 - 475 (2001)
The first total synthesis of (±)-epigmagnolin A was was achieved employing a C-H insertion reaction reaction to generate selectively the bicyclic framework with the exo, endo-stereochemistry.
C-H insertion approach to the synthesis of endo,exo-furofuranones: Synthesis of (±)-asarinin, (±)-epimagnolin A, and (±)-fargesin
Brown,Bataille,Bruton,Hinks,Swain
, p. 6719 - 6728 (2007/10/03)
A series of novel 5-aryl-4-aryloxymethyl-3-diazotetrahydrofuran-2-ones (12, 24, and 35a/b) have been prepared and found to undergo regio- and stereoselective C-H insertion reactions to afford 2,6-diaryl-3,7-dioxabicyclo[3.3.0]octane-8-ones (18, 26, and 36a/b) with endo,exo stereochemistry. Subsequent reduction of the lactone ring and cyclization of the resulting diols 27 and 37a/b permitted the synthesis of three endo, exo-furofuran lignans: asarinin (2), fargesin (3), and epimagnolin A (4). En route to the key diazo compounds 24 and 35a/b, a modified procedure for the Ghosez keteniminium-olefin cyclization was developed, which was required to minimize the decomposition of acid-sensitive functional groups such as electron-rich benzylic ethers that were present in the target compounds 2-4.
(-)-Magnofargesin and (+)-magnoliadiol, two lignans from Magnolia fargesii
Miyazawa, Mitsuo,Kasahara, Hiroyuki,Kameoka, Hiromu
, p. 531 - 533 (2007/10/03)
Two new lignans, (-)-magnofargesin and (+)-magnoliadiol, were isolated from the flower buds of Magnolia fargesii. The absolute configuration assignment of (-)-magnofargesin was achieved by its isomerization to (+)-magnolin.