656827-11-1Relevant articles and documents
Polyhydroxylated pyrrolidine and 2-oxapyrrolizidine as glycosidase inhibitors
Wang, Jen-Tsung,Lin, Ting-Chien,Chen, Ying-Hsuan,Lin, Chun-Hung,Fang, Jim-Min
, p. 783 - 791 (2013/08/26)
Using D-serine as a chiral precursor, a polyhydroxylated pyrrolidine (1), its derivatives bearing carboxylate, phosphate and phosphonate groups (2-4) and an oxapyrrolizidine (5) were synthesized. The pyrrolidine ring was formed by intramolecular amino-mercuration. The bicyclic scaffold of oxapyrrolizidine was further constructed by an intramolecular attack of the carbamate group on the iodomethyl group. Compounds 1 and 5 were found to inhibit β-glucosidase and α-galactosidase, respectively, in a competitive manner, whereas compounds 2, 3 and 4 did not produce significant inhibition against glycosidases. The Royal Society of Chemistry 2013.
D-glucosamine-derived synthons for assembly of l - Threo -sphingoid bases. Total synthesis of rhizochalinin C
Ko, Jaeyoung,Molinski, Tadeusz F.
, p. 498 - 505 (2013/02/25)
A five-step transformation of d-glucosamine, commencing with indium-mediated Barbier reaction without isolation of intermediates, into (R,R)-2-aminohex-5-ene-1,3-diol in 45-51% is described. The latter is a useful synthon for assembly of l-threo-sphingoid bases: long-chain aminoalkanols and aminoalkanediols with configurations antipodal to that found in mammalian D-erythro-sphingosine but prevalent among invertebrate-derived sphingolipids. The utility of the method is demonstrated by the first total synthesis of rhizochalinin C, the long-chain, two-headed sphingoid base aglycon of the natural product rhizochalin C from the marine sponge Rhizochalina incrustata.
An Efficient and Highly Stereocontrolled Route to Bulgecinine Hydrochloride
Khalaf, Juhienah K.,Datta, Apurba
, p. 387 - 390 (2007/10/03)
(-)-Bulgecinine is a nonproteinogenic amino acid component present in bulgecins A, B, and C, antibiotic glycopeptides derived from Pseudomonas acidophila and Pseudomonas mesoacidophila. In combination with β-lactam antibiotics, bulgecins exihibit a unique