中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | methyl 2-hydroxy-4-methoxy-6-(methoxycarbonylmethyl)benzoate | 100118-53-4 | C12H14O6 | 254.24 |
—— | 2-carboxymethyl-4,6-dimethoxy-benzoic acid | 4778-99-8 | C11H12O6 | 240.213 |
—— | dimethyl 3,5-dihydroxyhomophthalate | 6110-30-1 | C11H12O6 | 240.213 |
—— | 2-carboxymethyl-4,6-dimethoxybenzoic acid 2-trimethylsilanylethyl ester | 656809-49-3 | C16H24O6Si | 340.448 |
2,4-二甲氧基-6-(1-甲基戊-3-炔氧基羰基甲基)苯甲酸 | 2,4-dimethoxy-6-(1-methylpent-3-ynyloxycarbonylmethyl)benzoic acid | 656809-54-0 | C17H20O6 | 320.342 |
—— | 2,4-dimethoxy-6-(1-methylpent-3-ynyloxycarbonylmethyl)benzoic acid 2-trimethylsilanylethyl ester | 656809-53-9 | C22H32O6Si | 420.578 |
2,4-二甲氧基-6-甲基苯甲酸甲酯 | methyl 2,4-dimethoxy-6-methylbenzoate | 6110-37-8 | C11H14O4 | 210.23 |
—— | 2,4-dimethoxy-6-methylbenzoic acid 2-trimethylsilanylethyl ester | 656809-46-0 | C15H24O4Si | 296.439 |
2,4-二甲氧基-6-甲基苯甲酸 | 2,4-dimethoxy-6-methylbenzoic acid | 3686-57-5 | C10H12O4 | 196.203 |
2,4-二羟基-6-甲基苯甲酸甲酯 | methyl orsellinate | 3187-58-4 | C9H10O4 | 182.176 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | methyl 2-carboxy-3,5-dimethoxyphenylacetate | 83375-20-6 | C12H14O6 | 254.24 |
—— | 2-carboxymethyl-4,6-dimethoxy-benzoic acid | 4778-99-8 | C11H12O6 | 240.213 |
—— | 6,8-dimethoxy-1H-2-benzopyran-1,3(4H)-dione | 82218-06-2 | C11H10O5 | 222.197 |
Oxy-substituted homophthalic anhydrides have been synthesized by cycloaddition of di- and tri-oxy butadienes to the allenic diester (1). By base-catalysed cycloaddition to appropriate benzoquinones they have afforded new syntheses of viocristin (19), isoviocristin (20) and analogous 1,4-anthraquinones. Related chemistry has led to the naphthalene (34) and the anhydride (35), intermediates in published syntheses of semivioxanthin and 6- methylpretetramid respectively.