Fig. 3 in The racemic trimeric quinone and polycyclic quinones isolated from the aerial parts of Morinda umbellata L

Fig. 3. Key HMBC correlations of compounds 1–4.Published as part of Li, Changkang, Dong, Chaoxuan, Fu, Jia, Xie, Jun, Lai, Shengtian, Wang, Hongqing, Chen, Ruoyun & Kang, Jie, 2021, The racemic trimeric quinone and polycyclic quinones isolated from the aerial parts of Morinda umbellata L, pp. 1-9 in Phytochemistry (112622) 183 on page 5, DOI: 10.1016/j.phytochem.2020.112622, http://zenodo.org/record/829180