中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (2R,5R,6R,7R)-1-aza-2-(tert-butyl)-6-hydroxy-6-(benzyloxymethyl)-5-methoxycarbonyl-7-methyl-3-oxa-8-oxobicyclo[3.3.0]octane | 1373929-23-7 | C21H29NO6 | 391.464 |
—— | (2R,5R,6R)-1-aza-2-(tert-butyl)-6-hydroxy-6-(benzyloxymethyl)-5-methoxycarbonyl-3-oxa-8-oxobicyclo[3.3.0]octane | 1373929-04-4 | C20H27NO6 | 377.437 |
—— | methyl (2R,4S)-3-(4-benzyloxy-3-oxobutanoyl)-2-t-butyl-oxazolidine-4-carboxylate | 1373928-98-3 | C20H27NO6 | 377.437 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | methyl (2R,3R,4S)-3-((benzyloxy)methyl)-3-hydroxy-2-hydroxymethyl-4-methyl-5-oxopyrrolidine-2-carboxylate | 1373929-25-9 | C16H21NO6 | 323.346 |
—— | (2R,3R,4S)-3-((benzyloxy)methyl)-3-hydroxy-2-hydroxymethyl-4-methyl-5-oxopyrrolidine-2-carboxylic acid | 1373929-29-3 | C15H19NO6 | 309.319 |
Fused systems are formed preferentially, under standard conditions, but spiro systems are accessible only when the formation of the fused system is blocked and with careful optimisation of reaction conditions.