中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
((2R,3R,4S,5S,6S)-3,4,5-三(苄氧基)-6-甲氧基四氢-2H-吡喃-2-基)甲醇 | methyl 2,3,4-tri-O-benzyl-α-D-mannopyranoside | 34212-64-1 | C28H32O6 | 464.558 |
甲基 2,3,4-三-O-苄基-6-O-三苯基甲基-ALPHA-D-吡喃甘露糖苷 | (2S,3S,4S,5R,6R)-3,4,5-Tris-benzyloxy-2-methoxy-6-trityloxymethyl-tetrahydro-pyran | —— | C47H46O6 | 706.879 |
2,3,4-三-O-苄基-6-O-叔丁基二甲基甲硅烷基-Α-D-吡喃甘露糖苷甲酯 | methyl 2,3,4-tri-O-benzyl-6-O-(tert-butyldimethylsilyl)-α-D-mannopyranoside | 206186-94-9 | C34H46O6Si | 578.821 |
—— | methyl 2,3,4-tri-O-benzyl-6-monomethoxytrityl-α-D-mannopyranoside | 791820-19-4 | C48H48O7 | 736.905 |
—— | methyl 6-O-trityl-α-D-mannopyranoside | 20231-36-1 | C26H28O6 | 436.505 |
—— | methyl 6-O-(4-methoxyphenyldiphenylmethyl)-α-D-mannopyranoside | 191332-82-8 | C27H30O7 | 466.531 |
甲基-D-丙噻 | (2R,3S,4S,5S,6S)-2-(hydroxymethyl)-6-methoxytetrahydro-2H-pyran-3,4,5-triol | 617-04-9 | C7H14O6 | 194.185 |
甲基6-O-[(叔丁基)二苯基硅烷基]-2,3,4-三-O-(苯基甲基)-ALPHA-D-吡喃甘露糖苷 | tert-Butyl-diphenyl-((2R,3R,4S,5S,6S)-3,4,5-tris-benzyloxy-6-methoxy-tetrahydro-pyran-2-ylmethoxy)-silane | 186540-03-4 | C44H50O6Si | 702.963 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | methyl 2,3,4-tri-O-benzyl-6-deoxy-6-C-formyl-α-D-mannopyranoside | 40653-17-6 | C29H32O6 | 476.569 |
—— | methyl 2,3,4,6-tetra-O-benzyl-L-glycero-α-D-manno-heptopyranoside | 122588-59-4 | C36H40O7 | 584.709 |
—— | methyl-2,3,4-tetra-O-benzyl-L-glycero-α-D-manno-heptopyranoside | 122588-51-6 | C29H34O7 | 494.585 |
—— | methyl 2,3,4-tri-O-benzyl-D-glycero-α-D-gluco-heptopyranoside | 103597-20-2 | C29H34O7 | 494.585 |
—— | methyl 2,3,4-tri-O-benzyl-L-glycero-α-D-gluco-heptopyranoside | 103597-24-6 | C29H34O7 | 494.585 |
—— | 3,4,6-tri-O-benzyl-1,2-dideoxy-α-D-xylo-hex-1-enyl (methyl 2,3,4-tri-O-benzyl-6,7-dideoxy-α-D-manno-octopyranosid)uronate | 302800-80-2 | C57H62O10 | 907.113 |
—— | 2-[(2R,3S,4S,5S,6S)-6-methoxy-3,4,5-tris(phenylmethoxy)oxan-2-yl]-2,3-dihydropyran-4-one | 1254038-24-8 | C32H34O7 | 530.618 |
—— | (2S,3S,4S,5R,6R)-3,4,5-Tris-benzyloxy-2-methoxy-6-vinyl-tetrahydro-pyran | 122588-56-1 | C29H32O5 | 460.57 |
—— | 1-O-acetyl-2,3,4-tri-O-benzyl-6,7-dideoxy-D-manno-hept-6-enopyranose | 306299-95-6 | C30H32O6 | 488.58 |
—— | methyl 8-O-(3,4,6-tri-O-benzyl-1,2-dideoxy-D-xylo-hex-1-enyl)-6,7,9-trideoxy-α-D-manno-nona-8-enopyranoside | 302800-82-4 | C58H64O9 | 905.141 |
—— | methyl 6-C-(2,6-anhydro-4,5,7-tri-O-benzyl-1,3-dideoxy-D-xylo-hept-2-enit-1-yl)-2,3,4-tri-O-benzyl-6-deoxy-α-D-mannopyranoside | —— | C56H60O9 | 877.087 |
—— | methyl 2,3,4-tri-O-benzyl-6-deoxy-6-diethoxyphosphinoylmethylene-α-D-mannopyranoside | 220853-26-9 | C33H41O8P | 596.657 |
—— | methyl (2R,3R)-2,3-dihydroxy-3-[(2S,3S,4S,5S,6S)-3,4,5-trihydroxy-6-methoxyoxan-2-yl]propanoate | 1345664-91-6 | C10H18O9 | 282.248 |
—— | methyl L-glycero-α-D-manno-heptopyranoside | 127642-33-5 | C8H16O7 | 224.211 |
—— | methyl 7-O-L-glycero-α-D-manno-heptopyranosyl-L-glycero-α-D-manno-heptopyranoside | 131289-48-0 | C15H28O13 | 416.38 |
An exploration of the synthesis of D-glycero-D-altro-heptose, a constitutent of O antigen chains in lipopolysaccharides from Campylobacter jejuni serotypes O:23 and O:36 led to a study of the 2-trimethylsilylthiazole homologation procedure for heptose synthesis. In contrast to the diastereoselective formation of a 1,2:3,4-di-O-isopropylidene-D-glycero-α-D-galacto-heptopyranose derivative from 1,2:3,4-di-O-isopropylidene-α-D-galacto-hexodialdo-1,5-pyranose, methyl 2,3,4-tri-O-benzyl-D-hexodialdo-1,5-pyranosides with the gluco and manno configurations showed no preference for the formation of compounds with the D-glycero configuration. Attempts to achieve high diastereoselectivity in the conversion of L-glycero into the D-glycero isomers by oxidation at C-6 followed by reduction with L-selectride were unsuccessful with the thiazole adducts, but the desired products were formed in similar reactions of methyl 2,3,4-tri-O-benzyl-7-O-tert-butyldimethylsilyl-D-heptopyranosides. The approach to homologation in the altro series was thwarted by epimerization at C-5 in the attempted formation of methyl 2,3,4-tri-O-benzyl-α-D-altro-hexodialdo-1,5-pyranoside. The successful synthesis of methyl D-glycero-α-D-altro-heptopyranoside from methyl α-D-glucopyranoside was achieved by homologation followed by configurational alteration from the D-gluco to the D-altro series.