29723-28-2Relevant articles and documents
Total Synthesis and Biological Evaluation of Irciniastatin A (a.k.a. Psymberin) and Irciniastatin B
Uesugi, Shun-Ichiro,Watanabe, Tsubasa,Imaizumi, Takamichi,Ota, Yu,Yoshida, Keisuke,Ebisu, Haruna,Chinen, Takumi,Nagumo, Yoko,Shibuya, Masatoshi,Kanoh, Naoki,Usui, Takeo,Iwabuchi, Yoshiharu
, p. 12333 - 12350 (2016/01/09)
Irciniastatin A (a.k.a. psymberin) and irciniastatin B are members of the pederin natural product family, which have potent antitumor activity and structural complexity. Herein, we describe a full account of our total synthesis of (+)-irciniastatin A and (-)-irciniastatin B. Our synthesis features the highly regioselective Eu(OTf)3-catalyzed, DTBMP-assisted epoxide ring opening reaction with MeOH, which enabled a concise synthesis of the C1-C6 fragment, extensive use of AZADO (2-azaadamantane N-oxyl) and its related nitroxyl radical/oxoammonium salt-catalyzed alcohol oxidation throughout the synthesis, and a late-stage assembly of C1-C6, C8-C16, and C17-C25 fragments. In addition, for the synthesis of (-)-irciniastatin B, we achieved the C11-selective control of the oxidation stage via regioselective deprotection and AZADO-catalyzed alcohol oxidation. The synthetic irciniastatins showed high levels of cytotoxic activity against mammalian cells. Furthermore, chemical footprinting experiments using synthetic compounds revealed that the binding site of irciniastatins is the E-site of the ribosome.
Copper-catalyzed methyl esterification of aromatic aldehydes and benzoic alcohols by TBHP as both oxidant and methyl source
Li, Pan,Zhao, Jingjing,Lang, Rui,Xia, Chungu,Li, Fuwei
supporting information, p. 390 - 393 (2014/01/06)
A copper-catalyzed synthesis of methyl esters from aromatic aldehydes in the presence of tert-butyl hydrogen peroxide (TBHP) was developed via a radical reaction mechanism. TBHP acts not only as an efficient oxidant, but also as a green methyl source in such transformation. Moreover, this method could also be efficiently extended to the methyl esterification of benzylic alcohols.
TRISUBSTITUTED METHYL ALCOHOLS AND THEIR POLYMERIZABLE DERIVATIVES
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Paragraph 0049, (2013/07/05)
Provided herein are trisubstituted methyl alcohols, preferably pH indicators that are substituted with optionally substituted aryl and or optionally substituted heteroaryl groups, and optionally include one or more polymerizable substituents.