Browsing by Author "Hirsch, A."
Now showing items 1-6 of 6
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Article
A chiral dumbbell shaped bis(fullerene) oligoelectrolyte
Chronakis, Nikos; Hartnagel, U.; Braun, M.; Hirsch, A. (2007)The first icosacationic bis(fullerene) whose water solubility is provided by twenty peripheral ammonium groups has a rigid, almost cylindrical shape and was synthesized by connecting two fullerene cores with a chiral ...
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Article
Macrocyclic cyclo[n]malonates - Synthetic aspects and observation of columnar arrangements by X-ray crystallography
Chronakis, Nikos; Brandmüller, T.; Kovács, Christian; Reuther, U.; Donaubauer, W.; Hampel, F.; Fischer, F.; Diederich, F.; Hirsch, A. (2006)A variety of achiral and chiral macrocyclic oligomalonates were synthesised in a one-step procedure through condensation of malonyl dichloride with α,ω-diols. We have investigated the applicability of this method by varying ...
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Macrocyclic malonates. A new family of tethers for the regio- and diastereoselective functionalization of [60]fullerene
Chronakis, Nikos; Hirsch, A. (2006)The tether-directed remote functionalization of C60 has been investigated by using cyclic bis- and trismalonate tethers. The reactive malonate groups are connected with alkyl spacers and their synthesis was performed in ...
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Article
Regio- and stereoselective synthesis of enantiomerically pure [60]fullerene tris-adducts with an inherently chiral e,e,e addition pattern
Chronakis, Nikos; Hirsch, A. (2005)The synthesis and flash column chromatographic separation of c enantiomerically pure tris-adducts of C60 with an e,e,e-addition pattern is achieved via cyclopropanation with chiral D3-symmetrical cyclo-tris(malonate) ...
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Article
Regioselective synthesis and zone selective deprotection of [60]fullerene tris-adducts with an e,e,e addition pattern
Beuerle, F.; Chronakis, Nikos; Hirsch, A. (2005)D3h-symmetrical tripodal tris(malonate) tethers have been used for the synthesis of [60]fullerene tris-adducts with an e,e,e addition pattern bearing topologically distinct polar and equatorial addend zones that can ...
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Article
Water solubility, antioxidant activity and cytochrome C binding of four families of exohedral adducts of C60 and C70
Witte, P.; Beuerle, F.; Hartnagel, U.; Lebovitz, R.; Savouchkina, A.; Sali, S.; Guldi, D.; Chronakis, Nikos; Hirsch, A. (2007)Over the past decade, surface-modified, water soluble fullerenes have been shown by many different investigators to exhibit strong antioxidant activity against reactive oxygen species (ROS) in vitro and to protect cells ...