中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2-羟基-4-甲氧基-6-(正丙基)苯甲酸甲酯 | methyl 2-hydroxy-4-methoxy-6-propylbenzoate | 57074-20-1 | C12H16O4 | 224.257 |
2-羟基-4-甲氧基-6-丙基苯甲酸乙酯 | ethyl 2-hydroxy-4-methoxy-6-n-propylbenzoate | 53530-26-0 | C13H18O4 | 238.284 |
2,4-二羟基-6-丙基-苯甲酸甲酯 | methyl 2,4-dihydroxy-6-propylbenzoate | 55382-52-0 | C11H14O4 | 210.23 |
—— | 2,4-dihydroxy-6-propylbenzoic acid ethyl ester | 21855-51-6 | C12H16O4 | 224.257 |
2-羟基-4-(2-羟基-4-甲氧基-6-丙基苯甲酰氧基)-6-丙基苯甲酸 | divaricatic acid | 491-62-3 | C21H24O7 | 388.417 |
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 |
—— | sekikaic acid | 607-11-4 | C22H26O8 | 418.444 |
2,4-二羟基-3-(2-羟基-4-甲氧基-6-丙基-苯甲酰氧基)-6-戊基-苯甲酸 | 2,4-dihydroxy-3-(2-hydroxy-4-methoxy-6-propyl-benzoyloxy)-6-pentyl-benzoic acid | 552-56-7 | C23H28O8 | 432.471 |
—— | sekikaic acid methyl ester | 6161-77-9 | C23H28O8 | 432.471 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 3'-hydroxy-5'-propylphenyl 2-hydroxy-4-methoxy-6-propylbenzoate | —— | C20H24O5 | 344.408 |
—— | depsidellin D | —— | C31H36O8 | 536.622 |
—— | 3'-methoxy-5'-propylphenyl 2-hydroxy-4-methoxy-6-propylbenzoate | —— | C21H26O5 | 358.434 |
—— | 3'-hydroxy-5'-pentylphenyl2-hydroxy-4-methoxy-6-propylbenzoate | —— | C22H28O5 | 372.461 |
—— | depsidellin A | —— | C33H40O8 | 564.676 |
—— | depsidellin C | —— | C34H42O8 | 578.703 |
—— | 2'-O-methylstenosporic acid | —— | C24H30O7 | 430.498 |
3,5-二氯-2-羟基-4-甲氧基-6-丙基苯甲酸 | Differanisole A | 94474-29-0 | C11H12Cl2O4 | 279.12 |
—— | sekikaic acid methyl ester | 6161-77-9 | C23H28O8 | 432.471 |
—— | methyl 4-benzyloxy-3-(2'-hydroxy-4'-methoxy-6'-propylbenzoyloxy)-6-hydroxy-2-pentylbenzoate | 113487-80-2 | C31H36O8 | 536.622 |
The depsidones divaronic acid (24) (8-hydroxy-3-methoxy-1,6-dipropyl-11- oxo -11H- dibenzo [ b,e ][1,4]dioxepin-7-carboxylic acid) and stenosporonic acid (25) (8-hydroxy-3-methoxy-6-pentyl-l-propyl-ll-oxo-l1H-dibenzo[ b,e ][1,4]dioxepin-7-carboxylic acid) have been prepared by unambiguous synthesis, and have been shown to cooccur with colensoic acid, atranorin and chloroatranorin in the lichen Paraparmelia mongaensis. The syntheses employed a novel biomimetic-type approach which involved a Smiles rearrangement of a precursor meta-depside in the key step. This rearrangement has important biosynthetic implications and may account for the natural occurrence of isostructural depside-depsidone pairs.
The new depsides decarboxydivaricatic acid (3), decarboxy-2′-O-methyldivaricatic acid (4), de- carboxynorstenosporic acid (5), decarboxynorimbricaric acid (6), decarboxystenosporic acid (7), decarboxy-2′-O-methylnorimbricaric acid (8), decarboxyanziaic acid (9) and decarboxyperlatolic acid (10), and the novel tridepsides depsidellin A (23), depsidellin B (27) and depsidellin C (29) have been detected in the lichen Neofuscelia depsidella and their structures determined by total synthesis