Kumamoto H, Fukano M, Imoto S, Kohgo S, Odanaka Y, Amano M, Kuwata-Higashi N, Mitsuya H, Haraguchi K, Fukuhara K.

A novel entecavir analogue constructing with a spiro[2.4]heptane core structure in the aglycon moiety: Its synthesis and evaluation for anti-hepatitis B virus activity.

Nucleosides Nucleotides Nucleic Acids. 2017 Jul 3;36(7):463-473. doi: 10.1080/15257770.2017.1322209. Epub 2017 Jun 2. PMID: 28574799.

https://pubmed.ncbi.nlm.nih.gov/28574799/