中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | methyl 13-α-hydroxyisopropyl-12-methoxypodocarpa-8,11,13-trien-19-oate | 29271-65-6 | C22H32O4 | 360.494 |
—— | methyl 13-isopropenyl-12-methoxypodocarpa-8,11,13-trien-19-oate | 24099-80-7 | C22H30O3 | 342.478 |
甲基 O-甲基罗汉松酸酯 | methyl O-methylpodocarpate | 1231-74-9 | C19H26O3 | 302.414 |
—— | 12-methoxyabieta-8,11,13-trien-19-al | 24035-51-6 | C21H30O2 | 314.468 |
—— | 13-isopropyl-12-methoxypodocarpa-8,11,13-trien-19-ol | 24035-44-7 | C21H32O2 | 316.484 |
—— | 7-Isopropyl-6-acetyl-desoxy-podocarpsaeure-methylester | 24402-25-3 | C23H32O3 | 356.505 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | methyl 12-hydroxycallitrisate | 25356-78-9 | C21H30O3 | 330.467 |
—— | lambertic acid | —— | C20H28O3 | 316.441 |
—— | 12-methoxyabieta-8,11,13-trien-19-al | 24035-51-6 | C21H30O2 | 314.468 |
—— | methyl (1S,4aS,10aR)-6-methoxy-1,4a-dimethyl-9-oxo-7-propan-2-yl-3,4,10,10a-tetrahydro-2H-phenanthrene-1-carboxylate | 906-97-8 | C22H30O4 | 358.478 |
—— | 13-isopropyl-12-methoxypodocarpa-8,11,13-trien-19-ol | 24035-44-7 | C21H32O2 | 316.484 |
—— | 19-hydroxyferruginol | 30320-64-0 | C20H30O2 | 302.457 |
—— | methyl 7-oxo-11,14-dimethoxy-13-isopropylpodocarpate | 74320-55-1 | C23H32O5 | 388.504 |
The First total synthesis of enantiopure triptoquinone F (6) starting from podocarpic acid (10) is reported, as well as formal syntheses of enantiopure triptoquinones D (4) and E (5). An acid-promoted Fries rearrangement of a benzannulated lactone (14) has been used as a direct, moderately high yielding route for introduction of C11 functionality. Treatment of methyl 12-methoxypodocarpa-8,11,13-trien-19-oate (11) with t-butylhydroperoxide and a catalytic amount of ruthenium(III) chloride gives a mixture (1 : 1) of diastereomeric t-butylcyclohexadienones (26) and (28).
The radical decarboxylation–sulfoxide cycloelimination of 2′-pyridylthio esters formed from a series of podocarpic acid derivatives gives Δ4(18) -alkenes in high yield. An exception is the 13-nitro acid (2) which affords a thiohydroxamic ester (28), the relative stability of which is attributed to inhibition of the radical chain reaction by the nitro group. The stereochemistry of the pyridyl sulfide (18) has been confirmed by X-ray crystallography.