Total syntheses of highly oxidative Ryania diterpenoids facilitated by innovations in synthetic strategies

• Zhi-Qi Cao,
• Jin-Bao Qiao and
• Yu-Ming Zhao

Beilstein J. Org. Chem. 2025, 21, 2553–2570, doi:10.3762/bjoc.21.198

• , thereby facilitating targeted molecular optimization. In 2016, the Inoue group accomplished the total synthesis of cinncassiol A (9) and B (7), cinnzeylanol (6), and 3-epi-ryanodol (5) through precisely controlled reactions with high stereoselectivity [15] (Scheme 6). Their approach allowed for the

Advances in nitrogen-containing helicenes: synthesis, chiroptical properties, and optoelectronic applications

• Meng Qiu,
• Jing Du,
• Nai-Te Yao,
• Xin-Yue Wang and
• Han-Yuan Gong

Beilstein J. Org. Chem. 2025, 21, 1422–1453, doi:10.3762/bjoc.21.106

• × 10−2, respectively), its PLQY was relatively low (24%). Further molecular optimization led to the development of compounds 53a–c, which demonstrated ultra-narrow emission bands (FWHM = 16–34 nm), high PLQYs (67–82%), and exceptional CPL brightness (BCPLs of 583, 374, and 349 M−1 cm−1, respectively

Finding the most potent compounds using active learning on molecular pairs

• Zachary Fralish and
• Daniel Reker

Beilstein J. Org. Chem. 2024, 20, 2152–2162, doi:10.3762/bjoc.20.185

• regimes by enabling faster and more accurate identification of more diverse molecular hits against critical drug targets. Keywords: active learning; drug design; machine learning; molecular optimization; potency predictions; Introduction Active learning is a powerful concept in molecular machine

• ][4] and steer molecular optimization for drug discovery [5][6][7][8]. Active learning is particularly powerful during early project stages. However, one major downside is that, at these early project stages, only a very small amount of training data is available to learn from [9] which can be

• , model exploitation can lead to analog identification, which can limit the acquired knowledge and the scaffold diversity of selected hits [1]. We previously showed that leveraging pairwise molecular representations as training data can support molecular optimization by directly training on and predicting