Synthesis of glycosidic analogues of N-acetylneuramoyl-L-alanyl-D-isoglutamine

-Heptyl and -hexadecyl glycosides of N-acetylglucosamine have been obtained by the oxazoline method followed by deacetylation. Via a benzylidenation stage, the glycosides have been converted into the corresponding N-acetylmuramic acid derivatives and from these compounds glycosidic analogues of N-acetylmuramoyl-L-alanyl-D-isoglutamine have been synthesized.M. V. Frunze Simferopol' State University. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 714–718, September–October, 1987.     

Triterpene glycosides ofHedera helix I. The structures of glycosides L-1, L-2a,L-2b,L-3, L-4a,L-4b,L-6a,L-6b,L-6c,L-7a,and L7-b from the leaves of common ivy

The leaves of common ivy have yielded 11 triterpene glycosides: the 3-O-α-L-pyranosides of oleanolic acid (1), of echinocystic acid (2), and of hederagenin; the 3-O-[O-α-L-rhamnopyranosyl-(1→2)-α-L-arabinopyranoside]s of oleanolic acid (4), of echinocystic acid (5), and of hederagenin (6); the O-α-L-rhamnopyranosyl-(1→4)-O-β-D-glucopyranosyl-(1→6)-O-β-D-glucopyranosyl ester of hederagenin 3-O-α-L-pyranoside (7); the O-β-D-glucopyranosyl-(1→6)-O-β-D-glucopyranosyl ester of hederagenin 3-O-[O-α-L-pyranosyl-(1→2)-α-L-arabinopyranoside] (9); and the O-α-L-rhamnopyranosyl-(1→4)-O-β-D-glucopyranosyl-(1→6)-O-β-D-glucopyranosyl esters of oleanolic acid, echinocystic acid, and hederagenin 3-O-[O-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside]s (8), (10), and (11), respectively. This is the first time that compounds (1), (2), (5), (7), (9), and (10) have been found in this plant. Simferopol' State University. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 742–746, November–December, 1994.     

Isolation and characterization of the polysaccharide ofSophora japonica fruit

Simferopol' State University, and Kursk State Medical Institute. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 748-749, September-October, 1995. Original article submitted March 10, 1995.     

Triterpene glycoside ofKoelreuteria paniculata

Conclusions It has been established that koelreuteria saponin A is O--arabopyranosyl-(13)hederagenin, and koelreuteria Khimiya Prirodnykh Soedinenii, Vol. 6, No. 3, pp. 328–331, 1970