Curia Italy S.r.l., Via Volturno 43, 20089, Rozzano, MI, Italy.
Centro Grandi Strumenti (CGS), Università degli Studi di Pavia, Via Bassi 21, 27100, Pavia, Italy.
J Antibiot (Tokyo). 2024 Jun;77(6):345-352. doi: 10.1038/s41429-024-00714-6. Epub 2024 Mar 19.
A complete and detailed characterization of Rapamycin (1) and Prolylrapamycin (2) has been conducted by homo- and hetero-nuclear NMR experiments in DMSO-d along with HRMS and FT-IR spectra and DSCs analyses. The NMR experiments allowed the assignment of every single proton and carbon atom belonging to the two structures and the definitive confirm of the presence of a pyrrolidine ring in Prolylrapamycin (2) in place of the piperidine ring that characterizes the structure of Sirolimus.
通过在 DMSO-d 中进行同核和异核 NMR 实验以及高分辨率质谱 (HRMS) 和傅里叶变换红外光谱 (FT-IR) 分析和差示扫描量热法 (DSC) 分析,对雷帕霉素(1)和丙基雷帕霉素(2)进行了完整而详细的表征。NMR 实验使我们能够对属于这两种结构的每一个质子和碳原子进行分配,并明确确认丙基雷帕霉素(2)中存在吡咯烷环,而不是西罗莫司结构特征的哌啶环。