301
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Nilsson M, Svahn CM, Westman J. Synthesis of the methyl glycosides of a tri- and a tetra-saccharide related to heparin and heparan sulphate. Carbohydr Res 1993; 246:161-72. [PMID: 8370037 DOI: 10.1016/0008-6215(93)84030-a] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The methyl glycoside of a tetrasaccharide isolated from heparin, methyl O-(alpha-L-idopyranosyluronic acid)-(1-->4)-O-(2-acetamido-2-deoxy-alpha-D- glucopyranosyl)-(1-->4)-O-(beta-D-glucopyranosyluronic acid)-(1-->3)-O-beta-D-galactopyranoside disodium salt and a trisaccharide derivative thereof, methyl O-(alpha-L-idopyranosyluronic acid)-(1-->4)-O-(2-acetamido-2- deoxy-alpha-D-glucopyranosyl)-(1-->4)-O-beta-D-glucopyranosyluronic acid disodium salt, were synthesized using a block-type strategy. A suitable protected disaccharide block of iduronic acid and glucosamine (IdoA-GlcN) was used as a key intermediate for the syntheses and was glycosidated with a protected galactose derivative and a disaccharide block of glucuronic acid and galactose (GlcA-Gal) to give tri- and tetra-saccharide derivatives, respectively. Deprotection gave the target compounds.
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Affiliation(s)
- M Nilsson
- Organic Chemistry, Kabi Pharmacia AB, Stockholm, Sweden
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302
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Sakairi N, Kuzuhara H. Chemical behavior of benzylidene acetal groups bridging the contiguous glucose residues in malto-oligosaccharide derivatives. Carbohydr Res 1993; 246:61-73. [PMID: 8370045 DOI: 10.1016/0008-6215(93)84024-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Treatment of phenyl alpha-maltoside with an excess of alpha, alpha-dimethoxytoluene in the presence of (+)-10-camphorsulfonic acid, followed by partial hydrolysis to remove unstable acyclic acetal substituents, gave phenyl 3,2':4',6'-di-O-benzylidene-alpha-maltoside. Thus, one of the benzylidene groups formed an eight-membered cyclic acetal ring bridging the two monosaccharide components. This acetal function was stable under conventional acylation and alkylation conditions, but was selectively hydrolyzed by 80% acetic acid at room temperature. Treatment of a per-O-benzoyl derivative of 1 with N-bromosuccinimide-barium carbonate afforded phenyl 2,6,3', 4'-tetra-O-benzoyl-6'-bromo-6'-deoxy-alpha-maltoside in 80% yield. Reductive ring opening of the tri-O-benzyl derivative of 1 with lithium aluminum hydride-aluminum chloride gave a 2,3,6,3',4'-penta-O-benzyl derivative, while reduction with sodium cyanoborohydride-hydrogen chloride or borane trimethylamine complex-aluminum chloride afforded a 2,3,6,3',6'-penta-O-benzyl derivative in good yield. Similar regioselectivity was observed in the reductive cleavage of a 1,6-anhydro-3',2'':4'',6''-di-O-benzylidene-beta- maltotriose derivative.
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Affiliation(s)
- N Sakairi
- Institute of Physical and Chemical Research (RIKEN), Saitama, Japan
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303
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Mori Y, Morishima N. Regioselectivity of Reductive Cleavage of Methyl 4,6-O-Benzylidene-3-deoxyhexopyranosides Containing Fluorine at the 2- or 3-Position with LiAlH4–AlCl3. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1993. [DOI: 10.1246/bcsj.66.2061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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304
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305
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Kiso M, Furui H, Ando K, Hasegawa A. Synthetic Studies on Sialoglycoconjugates 45: Synthesis of 1-Deoxynojirimycin-Containing Oligosaccharides Related to the Cancer-Associated Sialyl-Lewis a Antigen Recognized by Lec-Cams (Selectins). J Carbohydr Chem 1993. [DOI: 10.1080/07328309308019416] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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306
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Koeman FA, Kamerling JP, Vliegenthart JF. Synthesis of structural elements of the capsular polysaccharide of streptococcus pneumoniae type 8. Tetrahedron 1993. [DOI: 10.1016/s0040-4020(01)82378-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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307
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Lubineau A, Gallic JL, Lemoine R. First synthesis of the 3′-sulfated Lewis trisaccharide, putative ligand for the leucocyte homing receptor. ACTA ACUST UNITED AC 1993. [DOI: 10.1039/c39930001419] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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308
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309
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Sarkar AK, Matta KL. 2,3,4,6-Tetra-O-benzyl-β-d-galactopyranosyl phenyl sulfoxide as a glycosyl donor. Synthesis of some oligosaccharides containing and α-d-galactopyranosyl group. Carbohydr Res 1992; 233:245-50. [PMID: 1344884 DOI: 10.1016/s0008-6215(00)90937-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- A K Sarkar
- Department of Gynecologic Oncology, Roswell Park Cancer Institute, Buffalo, New York 14263
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310
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311
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Hajkó J, Borbás A, Lipták A, Kajtár-Peredy M. Preparation of dioxolane-type fluoren-9-ylidene acetals of carbohydrates and their hydrogenolysis with AlClH 2 to give axial fluoren-9-yl ethers. Carbohydr Res 1992. [DOI: 10.1016/0008-6215(92)84177-t] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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312
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313
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Rivera-Sagredo A, Jiménez-Barbero J, Martín-Lomas M, Solís D, Díaz-Mauriño T. Studies of the molecular recognition of synthetic methyl beta-lactoside analogues by Ricinus communis agglutinin. Carbohydr Res 1992; 232:207-26. [PMID: 1423356 DOI: 10.1016/0008-6215(92)80055-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The 2-, 3-, 6-, 2'-, 3'-, 4'-, and 6'-deoxy derivatives and the 3-O-methyl derivative of methyl beta-lactoside have been synthesised and their binding to the galactose-specific agglutinin from Ricinus communis (RCA-120) has been investigated. The results indicate that HO-3,4,6 of the beta-D-galactopyranose moiety are the key polar groups. The main difference from the closely related ricin lectin RCA-60 involves HO-6 of the D-glucopyranose moiety, which seems to contribute to the binding of the carbohydrate to RCA-60 but not to RCA-120.
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314
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Synthesis of a sulfated glycopeptide corresponding to the carbohydrate-protein linkage region of proteoglycans: β-D-GlcA-(1→3){(SO3Na→4)}-β-D-Gal-(1→3)-β-D-Gal-(1→4)-β-D-Xyl-(1→3)-Ser. Tetrahedron Lett 1992. [DOI: 10.1016/s0040-4039(00)61200-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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315
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Hasegawa A, Ando T, Kameyama A, Kiso M. Synthetic Studies on Sialoglycoconjugates 40: Stereocontrolled Synthesis of Sialyl Lewis X Epitope and Its Ceramide Derivative. J Carbohydr Chem 1992. [DOI: 10.1080/07328309208016154] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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316
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Hasegawa A, Ando T, Kameyama A, Kiso M. Stereocontrolled synthesis of sialyl Lewis X ceramide consisting of a pentasaccharide recognized by the selectin family. Carbohydr Res 1992; 230:C1-5. [PMID: 1380892 DOI: 10.1016/s0008-6215(00)90524-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- A Hasegawa
- Department of Applied Bioorganic Chemistry, Gifu University, Japan
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317
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318
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van Steijn AM, van der Ven JG, van Seeventer P, Kamerling JP, Vliegenthart JF. Synthesis of a repeating pentasaccharide fragment of the capsular polysaccharide of Streptococcus pneumoniae type 18C. Carbohydr Res 1992; 229:155-60. [PMID: 1516103 DOI: 10.1016/s0008-6215(00)90488-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- A M van Steijn
- Department of Bio-Organic Chemistry, Utrecht University, Netherlands
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319
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Furui H, Kiso M, Hasegawa A. Synthesis of 1-deoxynojirimycin-containing glycans related to the Lewis X and sialyl-Lewis X epitopes recognized by LEC-CAMs. Carbohydr Res 1992; 229:C1-4. [PMID: 1381282 DOI: 10.1016/s0008-6215(00)90493-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- H Furui
- Department of Applied Bioorganic Chemistry, Gifu University, Japan
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320
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Ogawa S, Tonegawa T, Nishi K, Yokoyama J. Preparation of building blocks for carba-oligosaccharides related to cell-surface glycans. Carbohydr Res 1992; 229:173-82. [PMID: 1516104 DOI: 10.1016/s0008-6215(00)90491-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- S Ogawa
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Yokohama, Japan
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321
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Preuss R, Jung KH, Schmidt RR. Spiroketal Synthesis. — A Case of Intramolecular Glycoside Bond Formation. ACTA ACUST UNITED AC 1992. [DOI: 10.1002/jlac.199219920166] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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322
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Jain RK, Matta KL. Synthesis of oligosaccharides containing the X-antigenic trisaccharide (alpha-L-Fucp-(1----3)-[beta-D-Galp-(1----4)]-beta-D-GlcpNAc) at their nonreducing ends. Carbohydr Res 1992; 226:91-100. [PMID: 1499025 DOI: 10.1016/0008-6215(92)84057-y] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The "armed" methyl 2,3,4-tri-O-benzyl-1-thio-beta-L-fucopyranoside was reacted with "disarmed" phenyl O-(tetra-O-acetyl-beta-D-galactopyranosyl)-(1----4)-6-O-benzyl-2- deoxy-2-phthalimido-1-thio-beta-D-glucopyranoside in the presence of CuBr2-Bu4NBr complex to give phenyl O-(2,3,4,6-tetra-O-acetyl-beta-D-galactopyranosyl)-(1----4)-O- [(2,3,4-tri-O-benzyl-alpha-L-fucopyranosyl)-(1----3])-6-O-benzyl-2-deoxy -2- phthalimido-1-thio-beta-D-glucopyranoside (6) as a novel glycosyl donor. The glycosylating capability of 6 was further examined using N-iodosuccinimide-triflic acid as a reagent. This led to the synthesis of a tetrasaccharide and a pentasaccharide incorporating the X-antigenic structure represented by 6.
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Affiliation(s)
- R K Jain
- Department of Gynecologic Oncology, Roswell Park Cancer Institute, Buffalo, New York 14263
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323
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Unverzagt C, Kunz H. Stereoselective synthesis of glycosides and anomeric azides of glucosamine. ACTA ACUST UNITED AC 1992. [DOI: 10.1002/prac.19923340705] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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324
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Györgydeák Z. Oxime von Derivaten der 2-Acetamido-2,4-didesoxy-D-xylo-hexose und der entsprechenden Uronsäure. ACTA ACUST UNITED AC 1991. [DOI: 10.1002/jlac.1991199101222] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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325
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Verez-Bencomo V, Campos-Valdes MT, Mariño-Albernas JR, Fernandez-Santana V, Hernandez-Rensoli M, Perez-Martinez CS. Glycosides of 8-hydroxy-3,6-dioxaoctanal. A synthesis of a new spacer for synthetic oligosaccharides. Carbohydr Res 1991; 217:263-7. [PMID: 1797403 DOI: 10.1016/0008-6215(91)84138-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- V Verez-Bencomo
- Laboratory of Synthetic Antigens, Facultad de Química, Universidad de la Habana, Cuba
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326
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Fügedi P, Garegg PJ, Oscarson S, Rosén G, Silwanis BA. Glycosyl 1-piperidinecarbodithioates in the synthesis of glycosides. Carbohydr Res 1991. [DOI: 10.1016/0008-6215(91)84154-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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327
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Nilsson S, Lönn H, Norberg T. Synthesis of the trisaccharide, 2-(p-trifluoroacetamidophenyl)ethyl O-alpha-D-galactopyranosyl-(1-4)-O-beta-D-galactopyranosyl-(1-4)-2-acet amido-2-deoxy-beta-D-glucopyranoside, corresponding to the blood group P1 determinant. Glycoconj J 1991; 8:9-15. [PMID: 1726671 DOI: 10.1007/bf00731638] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The 2-(p-trifluoroacetamidophenyl)ethyl beta-glycoside of the P1 antigen trisaccharide, O-alpha-D-galactopyranosyl-(1-4)-O-beta-D-galactopyranosyl-(1-4)-2- acetamido-2-deoxy-D-glucopyranose, was synthesized. Thioglycoside intermediates were used as building blocks.
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Affiliation(s)
- S Nilsson
- Organic Synthesis Department, BioCarb AB, Lund, Sweden
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328
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Affiliation(s)
- A Kameyama
- Department of Applied Bioorganic Chemistry, Gifu University, Japan
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329
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Hasegawa A, Hotta K, Kameyama A, Ishida H, Kiso M. Synthetic Studies on Sialoglycoconjugates 23: Total Synthesis of Sialyl-α(2↠6)-Lactotetraosylceramide and Sialyl-α(2↠6)-Neolactotetraosylceramide. J Carbohydr Chem 1991. [DOI: 10.1080/07328309108543920] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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330
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Sarkar AK, Pawar SM, Matta KL. Synthesis of Two Isomeric Tetrasaccharides 0-α-L-Fucopyranosyl-(1→3) and (1→4)- 0-(2-Acetamido-2-Deoxy-β-D-Glucopyranosyl)-(1→3)- 0-(β-D-Galactopyranosyl)-(1→4)-D-Glucopyranose and a Related Tetrasaccharide 0-α-L-Fucopyranosyl-(1→3)- 0-(2-Acetamido-2-Deoxy-β-D-Glucopyranosyl-(1→6)- 0-(β-D-Galactopyranosyl)-(1→4)-D-Glucopyranose. J Carbohydr Chem 1991. [DOI: 10.1080/07328309108543906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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331
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Silwanis BA, El-Sokkary RI, Nashed MA, Paulsen H. A Comparison in the Efficiency of Six Standard 2-Amino-2-Deoxy-Glucosyl Donors for the Synthesis of (2-Deoxy-2-Phthalimido-β-D-Glucopyranosyl) (1→ 4)-β-D-Glucopyranosides. J Carbohydr Chem 1991. [DOI: 10.1080/07328309108543973] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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332
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Bock K, Adelhorst K. Derivatives of methyl beta-lactoside as substrates for and inhibitors of beta-D-galactosidase from E. coli. Carbohydr Res 1990; 202:131-49. [PMID: 2121339 DOI: 10.1016/0008-6215(90)84076-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The 2'-,4'-, and 6'-deoxy derivatives of methyl beta-lactoside have been synthesised by deoxygenation at positions 2', 4', and 6', and the 3'-deoxy derivative was obtained by a glycosylation reaction. The 2'-O-methyl, 2'-O-benzyl, 2'-amino-2'-deoxy, and 1'-deuterio derivatives have been synthesized also. Only the 6'-deoxy and 1'-deuterio derivatives were substrates for the beta-D-galactosidase from E. coli, and the 2'-deoxy- and 2'-amino-2'-deoxy derivatives were potent inhibitors for the hydrolysis of methyl beta-lactoside by the enzyme.
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Affiliation(s)
- K Bock
- Department of Chemistry, Carlsberg Laboratory, Copenhagen, Denmark
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333
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Dasgupta F, Anderson L. 1,3,4,6-Tetra-O-acetyl-2-chloroacetamido-2-deoxy-beta-D-glucopyranose as a glycosyl donor in syntheses of oligosaccharides. Carbohydr Res 1990; 202:239-55. [PMID: 2224892 DOI: 10.1016/0008-6215(90)84083-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
1,3,4,6-Tetra-O-acetyl-2-chloroacetamido-2-deoxy-beta-D-glucopyran ose was tested as a glycosyl donor for oligosaccharide synthesis via a ferric chloride-catalyzed coupling reaction. Glycosyl acceptors tried (6 in all) were O-benzyl-protected D-galactosides having free OH groups at positions 3 and 4, respectively, and similarly protected glycosides of D-glucose and 2-acetamido-2-deoxy-D-glucose unsubstituted on O-4. Existing syntheses of all the acceptors were improved, in four instances by exploitation of Garegg and Hultberg's cyanoborohydride procedure for the conversion 4,6-O-benzylidene----6- O-benzyl [Carbohydr. Res., 93 (1981) c10-c11; 108 (1982) 97-101]. Good to excellent yields of beta-linked disaccharides were obtained from the galactoside and glucoside acceptors, but with allyl 2-acetamido-3,6-di-O-benzyl-2-deoxy-alpha-D-glucopyranoside, stereoselectivity was lost (alpha:beta-ratio 1:2). Allyl and benzyl 2-acetamido-3,6-di-O-benzyl-2-deoxy-beta-D-glucopyranosides gave, respectively, the allyl and benzyl beta-glycosides of the donor as major products. A mechanism is proposed for this transglycosidation reaction. The N-chloroacetyl groups in the disaccharide products were readily converted into N-acetyl by reduction with zinc-acetic acid.
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Affiliation(s)
- F Dasgupta
- Department of Biochemistry, University of Wisconsin-Madison 53706
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334
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Alais J, David S. Preparation of disaccharides having a beta-D-mannopyranosyl group from N-phthaloyllactosamine derivatives by double or triple SN2 substitution. Carbohydr Res 1990; 201:69-77. [PMID: 2208192 DOI: 10.1016/0008-6215(90)84225-j] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Condensation of 1,2,3,4,6-penta-O-acetyl-beta-D-galactopyranose with methyl 3,6-di-O-benzyl-2-deoxy-2-phthalimido-beta-D-glucopyranoside, followed by alkaline methanolysis, gave a derivative of lactosamine that has an unsubstituted beta-D-galactopyranosyl group. Tributyltin oxide-mediated allylation gave a good yield of the 3'-O-allyl (9) and a poor yield of the 3',6'-di-O-allyl ether (8). Protection of 9 at O-6' was achieved by reductive opening of the 4',6'-O-anisylidene derivative, to give the 6'-O-(4-methoxybenzyl) ether 15. Conversion of 8 and 15 to their 2',4'-bis(trifluoromethanesulfonates), followed by SN2 reaction with benzoate, gave the corresponding beta-D-mannopyranosyl disaccharides. However, the model methyl 3-O-allyl-beta-D-galactopyranoside and 9 were converted into beta-D-mannopyranosyl derivatives in better yield (52-55%) by a one-pot, triple SN2 substitution of the tris(trifluoromethanesulfonates).
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Affiliation(s)
- J Alais
- Institut de Chimie Moléculaire d'Orsay, U.R.A. C.N.R.S., Université Paris-Sud, France
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335
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Sharma M, Bernacki RJ, Paul B, Korytnyk W. Fluorinated carbohydrates as potential plasma membrane modifiers. Synthesis of 4- and 6-fluoro derivatives of 2-acetamido-2-deoxy-D-hexopyranoses. Carbohydr Res 1990; 198:205-21. [PMID: 2379186 DOI: 10.1016/0008-6215(90)84293-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
2-Amino-2,4-dideoxy-4-fluoro- and 2-amino-2,4,6-trideoxy-4, 6-difluoro-D-galactose, and 2-amino-2,4-dideoxy-4-fluoro- and 2-amino-4-deoxy-4, 4-difluoro-D-xylo-hexose were synthesized, as potential modifiers of tumor cell-surface glyco-conjugate, from benzyl 2-acetamido-3-O-benzyl-2-deoxy-4, 6-di-O-mesyl-alpha-D-glucopyranoside and benzyl 2-acetamido-3, 6-di-O-benzyl-2-deoxy-4-O-mesyl-alpha-D-glucopyranoside, which were converted into the corresponding 4,6-difluoro-2,4, 6-trideoxy and 2,4-dideoxy-4-fluoro derivatives. Benzyl 2-acetamido-2-deoxy-4-O-mesyl-alpha-D-galactopyranoside and benzyl 2-acetamido-3,6-di-O-benzyl-2-deoxy-alpha-D-xylo-hexo-4-ulopyra noside were treated with diethylaminosulfur trifluoride to give 2-amino-2,4-dideoxy-4-fluoro-D-glucose and 2-amino-2,4-dideoxy-4, 4-di-fluoro-D-xylo-hexose derivatives, respectively, to give after deprotection the target compounds. Several of the peracetylated sugar derivatives inhibited L1210 tumor-cell growth in vitro at concentrations of 1-5 10(-5) M. The peracetylated derivative of 2-amino-2,4-dideoxy-4-fluoro-D-galactose inhibited protein and glycoconjugate biosynthesis, and also exhibited antitumor activity in mice with L1210 leukemia.
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Affiliation(s)
- M Sharma
- Department of Experimental Therapeutics, Roswell Park Memorial Institute, Buffalo, New York 14263
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336
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Marra A, Sinaÿ P. N-p-methoxybenzylidene derivatives of 2-amino-2-deoxy-D-glucose as glycosyl donors: a reinvestigation. Carbohydr Res 1990; 200:319-37. [PMID: 2379211 DOI: 10.1016/0008-6215(90)84200-e] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
6-O-Acetyl-3,4-di-O-benzyl-2-deoxy-2-p-methoxybenzylideneamino-D- glucopyranosyl chloride, 3,4,6-tri-O-acetyl-2-deoxy-2-p-methoxybenzylideneamino-alpha-D-glu copyranosyl bromide, 3,4,6-tri-O-acetyl-2-deoxy-2-p-methoxybenzylideneamino-alpha- and -beta-D- glucopyranosyl trichloroacetimidate, and 3,4,6-tri-O-acetyl-2-deoxy-2-p-nitrobenzylideneamino-alpha-D-gluco pyranosyl bromide have been synthesised, and their behaviour as glycosylation agents with various soluble promoters has been investigated. The results obtained question the accepted non-participating character of the N-p-methoxybenzylideneamino group.
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Affiliation(s)
- A Marra
- Laboratoire de Chimie, UA 1110, Paris, France
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337
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Kameyama A, Ishida H, Kiso M, Hasegawa A. Stereoselective synthesis of sialyl-lactotetraosylceramide and sialylneolactotetraosylceramide. Carbohydr Res 1990; 200:269-85. [PMID: 2379209 DOI: 10.1016/0008-6215(90)84197-3] [Citation(s) in RCA: 113] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The first total syntheses of sialyl-lactotetraosylceramide (28, IV3NeuAcLc4Cer) and sialylneolactotetraosylceramide (32, IV3NeuAcnLc4Cer) are described. Methyl O-(methyl 5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-D-glycero- alpha-D-galacto-2-nonulopyranosylonate)-(2----3)-2,4,6-tri-O-benzo yl-1-thio- beta-D-galactopyranoside (4), the key glycosyl donor, was prepared from 2-(trimethylsilyl)ethyl O-(methyl 5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-D-glycero-alpha-D-galacto -2- nonulopyranosylonate)-(2----3)-6-O-benzoyl-beta-D-galactopyranosid e (1), via benzoylation, replacement of the 2-(trimethylsilyl)ethyl group by acetyl, and introduction of the methylthio group with methylthiotrimethylsilane. Coupling of 2-(trimethylsilyl) ethyl 2,3,6,2',4',6'-hexa-O-benzyl-beta-D-lactoside (8), prepared from 2-(trimethylsilyl)ethyl beta-D-lactoside (5) via selective 3'-O-(4-methoxybenzylation), benzylation, and selective removal of the 4-methoxybenzyl group, with 3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-D-glucopyranosyl bromide (9) gave a trisaccharide derivative 10, from which the phthaloyl and O-acetyl groups were removed. N-Acetylation then gave 2-(trimethylsilyl)ethyl O-(2-acetamido-2-deoxy-beta-D-glucopyranosyl)-(1----3)-O-(2,4,6-tri-O-be nzyl- beta-D-galactopyranosyl)-(1----4)-2,3,6-tri-O-benzyl-beta-D-glucopyranos ide (12). Dimethyl(methylthio)sulfonium triflate-promoted coupling of 4 with 13, prepared from 12 by 4,6-O-benzylidenation, or with 15, obtained from 13 by O-(4-methoxybenzylation) and reductive opening of the benzylidene acetal, gave the corresponding pentasaccharide derivatives 16 and 20 in good yields. Compounds 16 and 20 were converted into the corresponding alpha-trichloroacetimidates 19 and 23 which, on coupling with (2S,3R,4E)-2-azido-3-O-benzoyl-4-octadecene-1,3-diol (24), gave the beta-glycosides 25 and 29, respectively. Finally, 25 and 29 were transformed, via selective reduction of the azide group, condensation with octadecanoic acid, O-deacylation, and hydrolysis of the methyl ester group, into 28 and 32, respectively.
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Affiliation(s)
- A Kameyama
- Department of Applied Bioorganic Chemistry, Gifu University, Japan
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338
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Kallin E, Lönn H, Norberg T. Synthesis ofp-TrifluoroacetamidophenylethylO-(2-Acetamido-2-Deoxy-β-D-Galactopyranosyl)-(1→4)-O-β-D- Galactopyanosyl-(1→4)-O-β-D-Glucopyranoside, Containing the Trisaccharide Portion of the Asialo-GM2 Glycolipid. J Carbohydr Chem 1990. [DOI: 10.1080/07328309008543866] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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339
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Abstract
Condensation of crystalline methyl 2-azido-4,6-O-benzylidene-2-deoxy-beta-D-galactopyranoside with methyl (2,3,4-tri-O-acetyl-alpha-L-idopyranosyl bromide)uronate in dichloromethane, in the presence of silver triflate and molecular sieve, provided 54% of methyl 2-azido-4,6-O-benzylidene-2-deoxy-3-O-(methyl 2,3,4-tri-O-acetyl-alpha-L-idopyranosyluronate)-beta-D-galactopyranoside . The use of methyl (2,3,4-tri-O-acetyl-alpha-L-idopyranosyl trichloroacetimidate)uronate as glycosyl donor, in the presence of trimethylsilyl triflate, improved the yield to 68%. Regioselective opening of the benzylidene group with sodium cyanoborohydride followed successively by O-sulfation with the sulfur trioxide-trimethylamine complex, saponification, catalytic hydrogenolysis and selective N-acetylation gave the disodium salt of methyl 2-acetamido-2-deoxy-3-O-(alpha-L-idopyranosyluronic acid)-4-O-sulfo-beta-D-galactopyranoside. Condensation of methyl 2-azido-4,6-O-benzylidene-2-deoxy-beta-D-galactopyranoside with methyl (2,3,4-tri-O-acetyl-alpha-D-glucopyranosyl bromide)uronate in dichloromethane, in the presence of silver triflate and molecular sieve, gave methyl 2-azido-4,6-O-benzylidene-2-deoxy-3-O-(methyl 2,3,4-tri-O-acetyl-beta-D-glucopyranosyluronate)-beta-D-galactopryano side in 85% yield. The sequence already described then gave the disodium salt of methyl 2-acetamido-2-deoxy-3-O-(beta-D-glucopyranosyluronic acid)-4-O-sulfo-beta-D-galactopyranoside.
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Affiliation(s)
- A Marra
- Ecole Normal Supérieure, Laboratoire de Chimie, Paris, France
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340
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Kameyama A, Ishida H, Kiso M, Hasegawa A. Synthetic Studies on Sialoglycoconjugates 12: Total Synthesis of Sialyl Neolactotetraosyl Ceramide. J Carbohydr Chem 1989. [DOI: 10.1080/07328308908048042] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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341
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Peracetylated chitobiose: Preparation by specific degradations of chitin, and chemical manipulations. Carbohydr Res 1989. [DOI: 10.1016/0008-6215(89)85021-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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342
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Kihlberg J, Frejd T, Jansson K, Kitzing S, Magnusson G. Preparation and calculated conformations of the 2'-, 3'-, 4'-, and 6'-deoxy, 3'-O-methyl, 4'-epi, and 4'- and 6'-deoxy-fluoro derivatives of methyl 4-O-alpha-D-galactopyranosyl-beta-D-galactopyranoside (methyl beta-D-galabioside). Carbohydr Res 1989; 185:171-90. [PMID: 2765031 DOI: 10.1016/0008-6215(89)80033-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The glycosyl chlorides of the 3-O-methyl (6) and 4-deoxy-4-fluoro (8) O-benzylated derivatives of D-galactopyranose and 2,3,4,6-tetra-O-benzyl-D-glucopyranose were condensed with methyl 2,3,6-tri-O-benzoyl-beta-D-galactopyranoside to give, after deprotection, the 3'-O-methyl (23), 4'-deoxy-4'-fluoro (25), and 4'-epi (27) derivatives, respectively, of methyl beta-D-galabioside (1). The glycosyl fluorides of 2,3,4-tri-O-benzyl-D-fucopyranose and the 3-deoxy (12) and 4-deoxy (16) O-benzylated derivatives of D-galactopyranose were condensed with methyl 2,3,6-tri-O-benzyl-beta-D-galactopyranoside (21), to give, after deprotection, the 6'-deoxy (31), 3'-deoxy (34), and 4'-deoxy (37) derivatives of 1, respectively. The 2'-deoxy (41) derivative of 1 was prepared by N-iodosuccinimide-induced condensation of 3,4,6-tri-O-acetyl-D-galactal and 21 followed by deprotection. Treatment of methyl 2,3,6-tri-O-benzoyl-4-O-(2,3-di-O-benzoyl-alpha-D-galactopyranosyl)-beta -D- galactopyranoside with Et2NSF3 (DAST), followed by deprotection, provided the 6'-deoxy-6'-fluoro (46) derivative of 1. Molecular mechanics calculations yielded conformations for 23, 25, 27, 31, 34, 37, 41, and 46 with small deviations from the calculated conformation for 1 (phi H/psi H: -40 degrees/-6 degrees).
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Affiliation(s)
- J Kihlberg
- Chemical Center, Lund Institute of Technology, Sweden
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343
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344
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Nilsson M, Norberg T. Synthesis of a dimeric Lewis X hexasaccharide derivative corresponding to a tumor-associated glycolipid. Carbohydr Res 1988; 183:71-82. [PMID: 3233598 DOI: 10.1016/0008-6215(88)80046-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The dimeric Lewis X hexasaccharide p-trifluoroacetamidophenylethyl O-beta-D-galactopyranosyl-(1----4)-O-[alpha-L-fucopyranosyl-(1----3)]-O- (2- acetamido-2-deoxy-beta-D-glucopyranosyl)-(1----3)-O-beta-D-galactopyrano syl- (1----4)-O-[alpha-L-fucopyranosyl-(1----3)]-2-acetamido-2-deoxy-beta-D- glucopyranoside (14), which is a derivative of a tumor-associated glycolipid, was synthesized from thioglycoside intermediates. A protected disaccharide was used as a key-intermediate for synthesis of the p-nitrophenylethyl glycoside of suitably protected O-beta-D-Galp-(1----4)-O-beta-D-GlcpN-(1----3)-O-beta-D-Galp-(1--- -4)-beta-D- GlcpN, which, after selective deblocking, was di-L-fucosylated and deprotected to give 14.
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Affiliation(s)
- M Nilsson
- Department of Organic Chemistry, Arrhenius Laboratory, University of Stockholm, Sweden
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345
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Artificial antigens and affinity sorbents with groups specificities Lea, Leb, and Led. Chem Nat Compd 1988. [DOI: 10.1007/bf00598177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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346
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Kihlberg J, Frejd T, Jansson K, Sundin A, Magnusson G. Synthetic receptor analogues: preparation and calculated conformations of the 2-deoxy, 6-O-methyl, 6-deoxy, and 6-deoxy-6-fluoro derivatives of methyl 4-O-alpha-D-galactopyranosyl-beta-D-galactopyranoside (methyl beta-D-galabioside). Carbohydr Res 1988; 176:271-86. [PMID: 3416321 DOI: 10.1016/0008-6215(88)80138-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The 2-deoxy (7), 6-O-methyl (15), 6-deoxy (22), and 6-deoxy-6-fluoro (31) derivatives of methyl beta-D-galabioside (1) have been synthesised. Thus, 7 was prepared by xanthate reduction using tributyltin hydride, whereas 22 was obtained by catalytic hydrogenation of a 6-deoxy-6-iodogalabioside. Regioselective monofluorination of methyl 2,3-di-O-benzoyl-beta-D-galactopyranoside with Et2NSF3 and subsequent alpha-D-galactosylation provided 31. Molecular mechanics calculations yielded similar conformations for 1, 7, 15, 22, and 31 with differences in phi H and psi H of less than 5 degrees. No indications of intramolecular hydrogen bonds, as displayed by 1 in the crystal, were found for 7, 15, 22, or 31.
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Affiliation(s)
- J Kihlberg
- Chemical Center, Lund Institute of Technology, Sweden
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347
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Paulsen H, Huffziger A, van Boeckel CAA. Synthese von Heparin-verwandten Trisacchariden mit einer zentralen α-L-Idopyranose-Einheit. ACTA ACUST UNITED AC 1988. [DOI: 10.1002/jlac.198819880508] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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348
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Iacomini M, Gorin PA, Baron M, Tulloch AP, Mazurek M. Novel d-glucans obtained by dimethyl sulfoxide extraction of the lichens Letharia vulpina, Actinogyra muehlenbergii, and an Usnea SP. Carbohydr Res 1988. [DOI: 10.1016/0008-6215(88)84063-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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349
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Garegg PJ, Lindberg B, Konradsson P, Kvarnström I. Hydrolysis of glycosides under reducing conditions. Carbohydr Res 1988. [DOI: 10.1016/0008-6215(88)84066-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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350
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Satomura S, Iwata T, Sakata Y, Omichi K, Ikenaka T. Synthesis of p-nitrophenyl 6(5)-O-benzyl-alpha-maltopentaoside, a substrate for alpha amylases. Carbohydr Res 1988; 176:107-15. [PMID: 3261202 DOI: 10.1016/0008-6215(88)84062-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
p-Nitrophenyl alpha-maltopentaoside, having a benzyl group on O-6 of the terminal (nonreducing) D-glucosyl group was prepared by use of a reductive ring-opening reaction. Highly regioselective reduction of p-nitrophenyl O-(2,3-di-O-benzoyl-4,6-O-benzylidene-alpha-D-glucopyranosyl)-(1----4)- tris[O-(2,3,6-tri-O-benzoyl-alpha-D-glucopyranosyl)-(1----4)]-2,3,6-tri- O- benzoyl-alpha-D-glucopyranoside by dimethylamine-borane and p-toluenesulfonic acid, followed by debenzoylation, gave p-nitrophenyl O-(6-O-benzyl-alpha-D-glucopyranosyl)-(1----4)-tris[O-alpha-D-glucopyran osyl- (1----4)]-alpha-D-glucopyranoside. An experiment was done on the mode of action of human pancreatic and salivary alpha amylases on this derivative. The compound is suitable as a substrate for the assay of alpha amylase when used with glucoamylase and alpha-D-glucosidase as coupling enzymes.
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Affiliation(s)
- S Satomura
- Osaka Research Division, Wako Pure Chemical Industries, Ltd., Hyogo, Japan
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