betulonic acid

Betulonic acid (Liquidambaric acid) 是一种在许多植物中存在的三萜类天然产物，具有抗肿瘤，抗炎，抗寄生虫和抗病毒的活性。

2,3-Indolobetulonic acid is pentacyclic triterpenoid derivative of betulonic acid and an inhibitor of α-glucosidase (IC50= 1.8 μM).1 1.Khusnutdinova, E.F., Smirnova, I.E., Kazakova, O.B., et al.Synthesis and evaluation of 2,3-indolotriterpenoids as new α-glucosidase inhibitorsMed. Chem. Res.262732-2742(2017)

N-(2-Azidoethyl)betulonamide is a pentacyclic triterpenoid, a derivative of betulonic acid , and an intermediate in the synthesis of betulonic acid derivatives within vitrocancer cell cytotoxicity.1 1.Suman, P., Patel, A., Solano, L., et al.Synthesis and cytotoxicity of Baylis-Hillman template derived betulinic acid-triazole conjugatesTetrahedron73(29)4214-4226(2017)

HCoV-229E-IN-1 is a potent inhibitor of HCoV-229E replication, with an EC50 of 0.65 μM and 0.6 μM in MTS and CPE cells, respectively[1]. HCoV-229E-IN-1 (compound 5h) (0.01-100 μM) fully suppresses the capacity of HCoV-229E replication in a dose-dependent manner[1].HCoV-229E-IN-1 (12 μM) fully prevented the formation of dsRNA intermediates of CoV RNA synthesis[1]. [1]. Stevaert A, et, al. Betulonic Acid Derivatives Interfering with Human Coronavirus 229E Replication via the nsp15 Endoribonuclease. J Med Chem. 2021 May 13;64(9):5632-5644.

Methyl betulonate (Betulonic acid methyl ester) 属于三萜类化合物。该化合物能够抑制8种肿瘤细胞系（包括耐药性肿瘤）以及2种正常成纤维细胞系的细胞增殖，其半抑制浓度（IC50s）均超过50.0 μM。