Journal
ORGANIC & BIOMOLECULAR CHEMISTRY
Volume 14, Issue 4, Pages 1231-1235Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ob02300a
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Funding
- National Natural Science Foundation of China [21272275, 81430092]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Program for Changjiang Scholars and Innovative Research Team in University [IRT1193]
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Trichiconlides A (1) and B (2), two novel limonoids, were isolated from the fruits of Trichilia connaroides. Compound 1 is a novel limonoid with a highly rearranged A/B ring system and an intact D ring, which formed an unprecedented 5/6/5/6/5 carbon skeleton. Trichiconlide B (2) possesses a 10-oxatricyclo[3.3.1.(3,8)] decane core and formed a cage-like structure located between rings A and C. Their structures and absolute configurations were elucidated by spectroscopic methods, single crystal X-ray diffraction, the ECD exciton chirality method and TDDFT/ECD calculations. 1 showed a moderate inhibitory effect on nitric oxide (NO) production.
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