153255-54-0Relevant articles and documents
Application of complex aldol reactions to the total synthesis of phorboxazole B
Evans,Fitch,Smith,Cee
, p. 10033 - 10046 (2007/10/03)
The synthesis of phorboxazole B has been accomplished in 27 linear steps and an overall yield of 12.6%. The absolute stereochemistry of the C4-C12, C33-C38, and C13-C19 fragments was established utilizing catalytic asymmetric aldol methodology, while the absolute stereochemistry of the C20-C32 fragment was derived from an auxiliary-based asymmetric aldol reaction. All remaining chirality was incorporated through internal asymmetric induction, with the exception of the C43 stereocenter which was derived from (R)-trityl glycidol. Key fragment couplings include a stereoselective double stereodifferentiating aldol reaction, a metalated oxazole alkylation, an oxazole-stabilized Wittig olefination, and a chelation-controlled addition of the fully elaborated alkenyl metal side chain.
Diastereodivergent synthesis of optically active trans- and cis-6-benzyloxymethyl-4-hydroxytetrahydro-2-pyrones via 3-hydroxyalkenyl phenyl sulfides
Takano,Sugihara,Ogasawara
, p. 1795 - 1798 (2007/10/02)
A diastereodivergent synthesis of optically active trans- and cis-6-benzyloxymethyl-4-hydroxytetrahydro-2-pyrones has been developed via 3-hydroxyalkenyl phenyl sulfides by employing base-induced cleavage of the glycidyl phenyl sulfide functionality as th
