218613-98-0Relevant academic research and scientific papers
First asymmetric synthesis of the marine furanosesterterpene natural product, (18S)-variabilin, employing enzymatic desymmetrization of propanediol derivatives
Takabe, Kunihiko,Hashimoto, Hiroya,Sugimoto, Hideki,Nomoto, Masaru,Yoda, Hidemi
, p. 909 - 912 (2007/10/03)
An efficient and stereodefined process is described for the first preparation of the marine furanosesterterpene tetronic acid, (18S)-variabilin, featuring lipase-catalyzed asymmetric desymmetrization of two types of propanediol precursors incorporating the terpene skeleton.
Method for producing epothilone B and derivatives, and intermediate products for this method
-
, (2008/06/13)
The invention relates to a method for producing epothilone B and derivatives, and to intermediate products for this method. According to the novel method, the epothilone B or derivatives are produced in high yields from the C1-C6, C7-C10 and C11-C20-fragm
Total Syntheses of Epothilones B and D
Mulzer, Johann,Mantoulidis, Andreas,Oehler, Elisabeth
, p. 7456 - 7467 (2007/10/03)
Total syntheses of the microtubule stabilizing antitumor drugs epothilone B and D are described, starting from optically pure (S)-malic acid and methyl (R)-3-hydroxy-2-methylpropionate. The synthesis is highly convergent by coupling the three fragments C1-C6 (fragment D), C7-C10 (fragment C), and C11-C21 (fragment B). Key steps are two stereoselective Wittig type olefinations to generate the 12,13- and 16,17-double bonds, an enantioselective Mukaiyama aldol addition to synthesize fragment D, and a sulfone anion allyl iodide alkylation to connect fragments B and C. Finally fragment D was attached to the B + C fragment via aldol addition.
Easy access to the epothilone family - Synthesis of epothilone B
Mulzer, Johann,Mantoulidis, Andreas,Oehler, Elisabeth
, p. 8633 - 8636 (2007/10/03)
An easy access to four out of five naturally occurring epothilones (A- E, 1-5) is reported. Key steps are an enantioselective Mukaiyama type aldol reaction, (E)- and (Z)-selective olefinations, and a sulfone alkylation.
