Oligomeric isoflavonoids. Part 3. Daljanelins A–D, the first pterocarpan- and isoflavanoid-neoflavonoid analogues
Oligomeric isoflavonoids. Part 3. Daljanelins A–D, the first pterocarpan- and isoflavanoid-neoflavonoid analogues
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DOI：
10.1039/p19950001049
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
J. A. Ferreira;J. W. Nel;E. Brandt;B. Bezuidenhoudt;D. Ferreira
中科院分区：
文献类型：
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作者：
J. A. Ferreira;J. W. Nel;E. Brandt;B. Bezuidenhoudt;D. Ferreira
The structures of daljanelins A–C 1, 3 and 5, the first pterocarpan-neoflavonoid oligomers, and of daljanelin D 6 a related isoflavonoid-neoflavonoid analogue from Dalbergia nitidula were established by spectroscopic methods. The structure and stereochemistry of daljanelin C 5 were unambiguously confirmed by synthesis via introduction of an electrophilic C-1 fragment to a pterocarpan nucleus followed by anionic coupling of a C6·C2 precursor and the late introduction of the final C6 fragment by a Grignard reaction.
