1265173-12-3Relevant academic research and scientific papers
Total synthesis of (-)-salinosporamide A
Kaiya, Yuji,Hasegawa, Jun-Ichi,Momose, Takayuki,Sato, Takaaki,Chida, Noritaka
, p. 209 - 219 (2011/10/03)
A detailed description of our second-generation total synthesis of salinosporamideA is presented. Three contiguous stereocenters in the γ-lactam structure seen in the natural product were established by stereoselective functionalization of a D-arabinose scaffold, including an Overman rearrangement to generate a highly congested tetrasubstituted carbon center. One of the definitive reactions in the synthesis was a Lewis acid mediated skeletal rearrangement of a pyranose structure, which enabled the practical conversion of the carbohydrate scaffold to the γ-lactam structure embedded in salinosporamideA. The use of a benzyl ester as a protective group for a sterically hindered carboxylic acid led to a one-pot global deprotection at the end of the synthesis. Rearrange your chemistry! The total synthesis of anticancer natural product salinosporamideA has been achieved through a unique skeletal rearrangement (see scheme). This reaction enabled the construction of the densely functionalized γ-lactam structure found in salinosporamideA through practical methodologies including an Overman rearrangement on a D-arabinose scaffold. Copyright
Formal synthesis of salinosporamide a starting from D-glucose
Momose, Takayuki,Kaiya, Yuji,Hasegawa, Jun-Ichi,Sato, Takaaki,Chida, Noritaka
experimental part, p. 2983 - 2991 (2010/03/01)
A formal synthesis of salinosporamide A is described. The tertiary alcohol function in salinosporamide A was stereoselectively generated via the substrate control by the reaction of a cyclic ketone derived from D-glucose with Me3Al, and subsequent Overman rearrangement of an allylic trichloroacetimidate effectively constructed the tetrasubstituted carbon with nitrogen. Formation of g-lactam, followed by the introduction of a cyclohexenyl unit furnished the Corey's intermediate of salinosporamide A. Georg Thieme Verlag Stuttgart.
