121587-29-9Relevant academic research and scientific papers
TOTAL SYNTHESIS OF A PUTATIVE TRIENE INTERMEDIATE IN MONENSIN BIOSYNTHESIS, ACTIVATED AS A CAPRYLCYSTEAMINE THIOL ESTER.
Holmes, Duncan S.,Dyer, Ulrich C.,Russell, Simon,Sherringham, John A.,Robinson, John A.
, p. 6357 - 6360 (1988)
The total synthesis is reported, from a pool of optically pure starting materials, of a tritium labelled form of a putative intermediate in monensin biosynthesis, in which the terminal carboxyl group is activated as a caprylcysteamine thiol ester.
Method for producing epothilone B and derivatives, and intermediate products for this method
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, (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.
