Phytochemical investigation of Pittosporum glabratum var. neriifolium EtOH extract led to four aromadendrane sesquiterpenoid glycosides, including one new, pitglabroside A (1), together with eight other kinds of constituents (5－12). Their structures were elucidated by comprehensive spectroscopic analysis, including 1D and ²D NMR, HRESIMS and ECD spectra. Four sesquiterpenoid glycosides (1－4) were evaluated for their inhibitory effects on NO production in LPS-induced BV-2 microglial cells. Compounds 1 and 2 showed significant inhibitory activity, with IC₅₀ values of 6.06 and 4.68 μM, respectively. Furthermore, the structure-activity analysis revealed that the senecioic group played a more important in the anti-inflammatory activity than the angelic moiety.

Pittosporum glabratum变种的植物化学研究。neriifolium EtOH 提取物导致四种芳香木苷倍半萜糖苷，包括一种新的 pitglabroside A ( 1 )，以及其他八种成分 ( 5－12 )。它们的结构通过综合光谱分析阐明，包括一维和^二维核磁共振、HRESIMS 和 ECD 光谱。评估了四种倍半萜糖苷 ( 1－4 ) 对 LPS 诱导的 BV-2 小胶质细胞产生 NO 的抑制作用。化合物1和2显示出显着的抑制活性，IC ₅₀值分别为 6.06 和 4.68  μ M。此外，结构-活性分析显示，senecioic 基团在抗炎活性中比天使基团发挥更重要的作用。