452085-27-7Relevant academic research and scientific papers
(R)-2,3-cyclohexylideneglyceraldehyde, a chiral pool synthon for the synthesis of 2-azido-1,3-diols
Rouf, Abdul,Aga, Mushtaq A.,Kumar, Brijesh,Taneja, Subhash C.
, p. 823 - 833 (2015/06/25)
A new approach was proposed for the synthesis of 2-azido-1,3-diols from easily available and inexpensive chiral pool synthon (R)-2,3-O-cyclohexylidene-D-glyceraldehyde, through Mitsunobu azidation of 1,2-diols. Both C(2) and C(1) azides in variable ratios
A stereocontrolled synthetic route to the C1-C18 subunit of pamamycin-607
Kang, Sung Ho,Jeong, Joon Won
, p. 3613 - 3616 (2007/10/03)
The C1-C18 subunit 2 of the 16-membered macrodiolide pamamycin-607 has been synthesized stereoselectively using the Ag2CO3-mediated intramolecular iodoetherification for the two cis-2,5-disubstituted tetrahydrofurans, crotylation and cuprate epoxide opening for the hydroxyl and methyl substituents.
Synthesis of optically active β,γ-unsaturated α-amino acids of α,β-unsaturated γ-amino acids. S(N)2- vs. S(N)2'-dichotomy of the Mitsunobu amination of allylic alcohols
Mulzer,Funk
, p. 101 - 112 (2007/10/02)
Novel and efficient syntheses (6-9 steps, overall yields 10-30%) are described for optically pure β,γ-unsaturated α-amino acids and α,β-unsaturated γ-amino acids, starting from (R)-isopropylidene glyceraldehyde and ethyl (S)-lactate, respectively. The key step is the Mitsunobu reaction of chiral secondary allylic alcohols with phthalimide as the nucleophile, where α,γ allylic transpositions are observed for the first time. The structure-α,γ-ratio-relationship is studied and also the stereochemistry of the allylic transposition. The α-substitution proceeds via clean S(N)2 inversion, whereas the γ-substitution corresponds to an (E)-anti attack of the nucleophilic with varying stereoselectivities.
