5,6-CHIRAGEN

Suven Life Sciences Synthon Chiragenics (Monmouth Junction, NJ, USA) Carbohydrate-based chiral technology N/A... [Pg.223]

Von Zelewsky has published many examples of the stereoselective synthesis of metal complexes using what he refers to as chiragen ligands. These are enantiopure natural compounds synthesized from the natural product (—)-a-pinene, which is combined with species such as bipyridine units to provide impressive control of metal-centered chirality.159-161 In this section, we will focus on the determination of absolute configurations in terms of stereospecific formation from different points of view in connection with absolute conformations in the ligands. [Pg.181]

O. Mamula et al., Helicates of chiragen-type ligands and their aptitude for chiral selfrecognition. Chem. Eur. J. 11, 3049-3057 (2005)... [Pg.85]

The chiragen derivative 91, incorporating two stereoselectively-linked bis-[4,5]-pineno-2,2 -bipyridine units, also yields complexes of type [M2L3] + (M = Fe, Zn and Cd). ... [Pg.171]

Celgene, Warren, New Jersey58 Chemi, Milan, Italy Chiragene, Warren, New Jersey Chiral Technologies, Exton, Pennsylvania chiral chromatography... [Pg.302]

Chirality in supramolecular coordination chemistry (Chapter 5). (a) Double-stranded helicates (b) chiragen ligands... [Pg.5]

CHlRAGEN-type ligands were used to produce self-assembled supramolecular coordination species with predetermined chirality. For instance 4,5-CHIRAGEN[m-xylyl]... [Pg.156]

Chiral recognition between CHIRAGEN ligands and the related assembled structures (from references ... [Pg.157]

Strategy for the construction of the metallated knot 5.72 and the trefoil knot 5.73 using the CHIRAGEN type ligand 50 (adapted with permission from reference ). [Pg.158]

Seymour, XL., Turecek, E, Maikov, A.V., Kocovsky, P. (2004) Chiral recognition in solution and the gas phase. Experimental and theoretical studies of aromatic D- and L-amino acid-Cu(II)-chiragen complexes. J. Mass Spectrom., 39,1044-1052. [Pg.225]

Chiragen[X]y a New Ligand Family Predetermining Chirality at the M-Center. The two bidentate ligands in a complex M(L L)2 in OC-6 determine the A... [Pg.296]

Figure 6. Model of the A-helical complex Tlu((+)-chiragen[6])(4,4 -dimethyl-...

Stereospecific synthesis—chiral building blocks and the chiragens ... [Pg.212]

Figure 10 Chiragen ligands (a) [4,5]-pineno-2,2 -bipyridine, one of the chiral bnilding blocks of the Chiragen ligands and (b) an example of a tetradentate Chiragen ligand.

A Chiragen based on the dipineno precursor (Figure 11a) has also been developed designated super-chiragen[0] or SGS[0] (Figure 11b) and shows similar behavior to its CG[0] analog. " ... [Pg.214]

The tetradentate Chiragen ligands have made a significant contribution to the transfer of chirality in metallo-supramolecnlar synthesis. This is discussed below with a limited number of illustrative examples, and it has been substantially reviewed. ... [Pg.214]

However, the related [5,6]-Chiragens (Figures 17b and 18) are somewhat more sterically demanding, and do not... [Pg.216]

A related chiral di-bidentate Chiragen chain has also been exploited to form stereoselectively determined molecular knots. The molecular thread I (shown at the left in Figure 24) incorporates two bidentate chelating units two... [Pg.218]

Figure 24 Fonnation of a chiral trefoil knot using a Chiragen ligand. (Reproduced from Ref. 61. Wiley-VCH, 2004.)...

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