115509-74-5Relevant articles and documents
Total synthesis of spicamycin
Suzuki, Tamotsu,Suzuki, Sayaka T.,Yamada, Iwao,Koashi, Yoshiaki,Yamada, Kazue,Chida, Noritaka
, p. 2874 - 2880 (2007/10/03)
The first total synthesis of one of the spicamycin congeners, SPM VIII (3), is described. A preliminary model study for construction of the characteristic N-glycoside linkage in spicamycin using tetra-O-benzyl-β-D-mannopyranosylamine (13) and halopurines 5 revealed that Pd-catalyzed conditions successfully provided the coupling products 14 and 15 in good yields. It was also shown that thermal anomerization of the N-glycosides easily occurred, which resulted in the predominant formation of the β-anomer as the thermodynamically favored compound, and the activation energy of anomerization of 15 was estimated to be ca. 30 kcal/mol. The novel aminoheptose unit of spicamycin 6 was prepared stereoselectively by carbon elongation of an acyclic aldehyde, prepared by ring cleavage reaction of a highly functionalized cyclohexane derived from naturally abundant myo-inositol. The Pd-catalyzed coupling reaction of the β-heptopyranosylamine 6 with protected 6-chloropurine 5d, followed by deprotection, provided spicamycin amino nucleoside 2, whose condensation with dodecanoylglycine completed the total synthesis of 3. This study confirmed the proposed unique structure of a novel nucleoside antibiotic.
The absolute configuration and optical purity of (-)- and (+)-1,2:4,5-di-O-cyclohexylidene-myo-inositols
Aneja,Aneja,Parra
, p. 17 - 18 (2007/10/02)
The absolute configurations of (-)- and (+)-1,2:4,5-di-O-cyclohexylidene-myo-inositols are derived as 1D- and 1L-1,2:4,5-di-O-cyclohexylidene-myo-inositols respectively, and are reverse of the most recent literature assignments.
The synthesis of DL-1-(hexadecanoyloxy)methyl- and 1-O-hexadecanoyl-inositols as potential inhibitors of phospholipase C
James,Massy,Wyss
, p. 1037 - 1057 (2007/10/02)
The synthesis of racemic analogues of phosphatidylinositol (PI) and phosphatidylinositol 4,5-bisphosphate (PIP2) starting from myo-inositol is described. Inositol derivatives with and without homologation at C(1) and with and without ionic grou