163391-76-2Relevant academic research and scientific papers
Chartarolides A-C, novel meroterpenoids with antitumor activities
Liu, Dong,Li, Yong,Li, Xiaodan,Cheng, Zhongbin,Huang, Jian,Proksch, Peter,Lin, Wenhan
supporting information, p. 1826 - 1829 (2017/04/21)
Three phenylspirodrimane-based meroterpenoids with novel scaffolds, namely chartarolides A-C (1–3), were isolated from a sponge (Niphates recondite) associated fungus Stachybotrys chartarum WGC-25C-6. Their structures were determined on the basis of comprehensive analyses of the spectroscopic data (IR, 1D and 2D NMR, HRESIMS), including the TDDFT-ECD calculation for the assignments of absolute configurations. The biogenetic generation of 1–3 through the conjunction of phenylspirodrimane and mollicellin-type analogues as the precursors was postulated. Chartarolides A-C exhibited significant cytotoxic activities against a panel of human tumor cell lines, and showed strong inhibitory activities against the human tumor related protein kinases of FGFR3, IGF1R, PDGFRb, and TrKB.
Total synthesis and structure revision of Stachybotrys spirolactams
Deng, Wei-Ping,Zhong, Min,Guo, Xiao-Chuan,Kende, Andrew S.
, p. 7422 - 7427 (2007/10/03)
The spirolactam structure 1 reported in 1996 by Roggo et al. has been enantioselectively synthesized in 20 steps from (+)-Wieland-Miescher ketone. Spectra of this synthetic lactam differed from those of the natural spirolactam from the Roggo group, leading to the hypothesis that the natural lactam may be the regioisomer 27, a structure previously ascribed by Jarvis et al. to the natural product stachybotrylactam. This hypothesis was confirmed by the first total synthesis of (-)-stachybotrylactam (27). Double reductive amination of two molecules of aldehyde 29 with one molecule of L-lysine led by analogous chemistry to the first synthesis of the pseudosymmetric "dimer" 30, whose spectra corresponded to those of the natural "dimer" originally assigned structure 5 by the Roggo group.
Enantioselective total synthesis and structure revision of spirodihydrobenzofuranlactam 1. Total synthesis of stachybotrylactam
Kende, Andrew S.,Deng, Wei-Ping,Zhong, Min,Guo, Xiao-Chuan
, p. 1785 - 1788 (2007/10/03)
(Matrix presented) The enantioselective total synthesis and structure revision of spirodihydrobenzofuranlactam 1 and of its regioisomer 25 are presented. Optically pure (+)-Wieland-Miescher ketone was utilized to construct the AB bicyclic core in 10 steps
