Synthesis of Undecachlorosulfolipid A: Re-evaluation of the Nominal Structure
作者:Christian Nilewski、Nicholas R. Deprez、Thomas C. Fessard、Dong Bo Li、Roger W. Geisser、Erick M. Carreira
DOI:10.1002/anie.201102521
日期:2011.8.16
Halo‐giant: The title compound at the left in the scheme was constructed by the synthesis and coupling of two stereochemically challenging fragments. A comparison of the NMR data of the synthetic material and the natural product indicates that the configuration had been misassigned in the latter. PT=5‐(1‐phenyltetrazolyl).
A compound represented by general formula (I) (in the formula, all symbols are as described in the description) or a salt thereof has a potent nerve-protecting and/or -repairing activity, and therefore can be used as a therapeutic agent for neuropathy (e.g., chronic inflammatory demyelinating polyneuropathy, Guillain-Barre syndrome, periarteritis nodosa, allergic vasculitis, diabetic peripheral neuropathy, entrapment neuropathy, peripheral neuropathy associated with the administration of a chemotherapeutic drug, or peripheral neuropathy associated with Charcot-Marie-Tooth disease).
A compound represented by general formula (I) (in the formula, all symbols are as described in the description) or a salt thereof has a potent nerve-protecting and/or -repairing activity, and therefore can be used as a therapeutic agent for neuropathy (e.g., chronic inflammatory demyelinating polyneuropathy, Guillain-Barre syndrome, periarteritis nodosa, allergic vasculitis, diabetic peripheral neuropathy, entrapment neuropathy, peripheral neuropathy associated with the administration of a chemotherapeutic drug, or peripheral neuropathy associated with Charcot-Marie-Tooth disease).
Synthesis of C1–C20 and C21–C40 fragments of tetrafibricin
作者:Venugopal Gudipati、Dennis P. Curran
DOI:10.1016/j.tetlet.2011.01.086
日期:2011.4
Efficient syntheses of suitably functionalized top and bottom fragments of tetrafibricin are described. The bottom fragment is prepared by two consecutive Kocienski-Julia couplings, while the top fragment synthesis features a dithiane alkylation and a Horner-Wadsworth-Emmons reaction. (C) 2011 Elsevier Ltd. All rights reserved.
The Polyol Domain of Amphidinol 3. A Stereoselective Synthesis of the Entire C(1)−C(30) Sector
作者:Leo A. Paquette、Shuh-Kuen Chang
DOI:10.1021/ol0511833
日期:2005.7.1
The richly oxygenated C(1)-C(30) polyol segment of amphidinol 3 has been synthesized in protected form. Incorporated in this long chain are 10 of the 25 stereogenic centers housed in the target. The asymmetric pathway that has been developed is based on the efficient union of three independently prepared subunits.