中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
1-硫代-b-D-葡萄糖四乙酸酯 | tetraacetyl thioglucose | 19879-84-6 | C14H20O9S | 364.373 |
—— | 2,3,4,6-tetra-O-benzoylglucosyl bromide | 14218-11-2 | C34H27BrO9 | 659.487 |
—— | 2,3,4,6-tetra-O-benzoyl-D-glucopyranosyl bromide | 165877-99-6 | C34H27BrO9 | 659.487 |
1,2,3,4,6-戊-O-苯甲酰基-D-吡喃葡萄糖苷 | 1,2,3,4,6-penta-O-benzoyl-D-glucopyranoside | 3006-49-3 | C41H32O11 | 700.698 |
Α-D-五苯甲酸酰吡喃葡萄糖 | 1,2,3,4,6-penta-O-benzoyl-α-D-glucopyranose | 22415-91-4 | C41H32O11 | 700.698 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | benzyl 2,3,4,6-tetra-O-benzoyl-1-thio-β-D-glucopyranoside | 158419-97-7 | C41H34O9S | 702.782 |
—— | [(2R,3R,4S,5R,6S)-3,4,5-tribenzoyloxy-6-[(E)-3-methoxy-3-oxoprop-1-enyl]sulfanyloxan-2-yl]methyl benzoate | 1423128-35-1 | C38H32O11S | 696.731 |
—— | p-tolyl 2,3,4,6-tetra-O-benzoyl-1-thio-β-D-glucopyranoside | 172847-85-7 | C41H34O9S | 702.782 |
—— | [(2R,3R,4S,5R,6S)-3,4,5-tribenzoyloxy-6-[(1S)-2,4,4-trimethyl-3-[(1E,3E,5E,7E,9E,11E,13E,15E,17E)-3,7,12,16-tetramethyl-18-[(3R)-2,6,6-trimethyl-3-[(2S,3R,4S,5R,6R)-3,4,5-tribenzoyloxy-6-(benzoyloxymethyl)oxan-2-yl]sulfanylcyclohexen-1-yl]octadeca-1,3,5,7,9,11,13,15,17-nonaenyl]cyclohex-2-en-1-yl]sulfanyloxan-2-yl]methyl benzoate | 1225465-68-8 | C108H108O18S2 | 1758.17 |
—— | [(2R,3R,4S,5R,6S)-3,4,5-tribenzoyloxy-6-[2,4,4-trimethyl-3-[(1E,3E,5E,7E,9E,11E,13E,15E,17E)-3,7,12,16-tetramethyl-18-(2,6,6-trimethylcyclohexa-1,3-dien-1-yl)octadeca-1,3,5,7,9,11,13,15,17-nonaenyl]cyclohex-2-en-1-yl]sulfanyloxan-2-yl]methyl benzoate | 1225465-70-2 | C74H80O9S | 1145.51 |
—— | methyl 2,3,4-tri-O-benzoyl-6-O-(2,3,4,6-tetra-O-benzoyl-D-glucopyranosyl)-α-D-glucopyranoside | —— | C62H58O15 | 1043.13 |
—— | 1,2:3:4-di-O-isopropylidene-6-O-(tetra-O-benzoyl-β-D-glucopyranosyl)-α-D-galactose | 70751-54-1 | C46H46O15 | 838.862 |
2-Haloethyl 1-thioglycosides are excellent leaving groups when the 2-haloethyl function is activated with silver salts or Lewis acids. These thioglycosides can be synthesized on the original Černý route or for better compatibility with the needs of a more complex glycoside synthesis, in stepwise procedures via 2-(2-tetrahydropyran-2-yloxy)ethyl glycosides or trityl 1-thioglycosides. The initial step in glycosidation reaction presumably proceeds via a thiiranium ion, which is responsible for their increased reactivity compared with normal thioethers as leaving groups in glycoside syntheses. Basic features of this new system with respect to reactivity and selectivity in disaccharide syntheses are described.