中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 18.19-Dinor-Δ8.11.13-abietatrienon-(4) | 157807-60-8 | C18H24O | 256.388 |
脱氢松香酸 | dehydroabietic acid | 1740-19-8 | C20H28O2 | 300.441 |
—— | (1S,4aS,10aR)-7-isopropyl-1,4a-dimethyl-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-1-carboxylic acid | 5155-70-4 | C20H28O2 | 300.441 |
—— | dehydroabietic acid chloride | 22478-66-6 | C20H27ClO | 318.887 |
—— | 13-isopropyl-4α-(2'-pyridylthio)-18-norpodocarpa-8,11,13-triene | —— | C24H31NS | 365.583 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 18-norabieta-8,11,13-triene | 19407-17-1 | C19H28 | 256.431 |
—— | 18-norabieta-8,11,13-trien-19-ol | 3860-41-1 | C19H28O | 272.431 |
—— | 18.19-Dinor-Δ8.11.13-abietatrienon-(4) | 157807-60-8 | C18H24O | 256.388 |
—— | 19-hydroxy-18(4->3)abeo-abieta-3,8,11,13-tetraen-18-oic acid | 70573-78-3 | C20H24O2 | 296.409 |
—— | 18-norabieta-8,11,13-trien-4-ol | 22478-65-5 | C19H28O | 272.431 |
—— | 1β-Hydroxymethyl-1α-hydroxy-nordehydro-abietan | 100165-16-0 | C19H28O2 | 288.43 |
—— | isotriptophenolide | 163565-61-5 | C20H24O3 | 312.409 |
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.