中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 5,6-Dehydro-7-oxo-O-methylpodocarpsaeure-methylester | 1865-97-0 | C19H22O4 | 314.381 |
甲基 O-甲基罗汉松酸酯 | methyl O-methylpodocarpate | 1231-74-9 | C19H26O3 | 302.414 |
—— | methyl 12-methoxy-7-oxopodocarpa-8,11,13-trien-19-oate | 901-36-0 | C19H24O4 | 316.397 |
The structure of a naphthalene derivative obtained by rearrangement of 13-methoxytotara-5,8,11,13-tetraen-7α-ol (2) has been revised to 5-(5′-isopropyl-6′-methoxy-2′-methyl-1′-naphthyl)-2-methylpent-2-ene (7). A minor oxidation product of 13-methoxytotara-8,11,13-triene (4) has been identified as 4-methoxy-3,3-dimethyl-7-(1′,3′,3′-trimethyl-2′-oxocyclohexanyl)isobenzofuran-1(3H)-one (16) and its structure confirmed by X-ray crystallography. Methyl 12-methoxypodocarpa-8,11,13-trien-19-oate (12) has been converted into an intermediate used in the synthesis of the linear diterpenoid umbrosone [3-(1′-hydroxy-1′-methylethyl)-5,5,9-trimethyl-5,6,7,8-tetrahydroanthracene-1,2-dione] (15).