Advances in chlorin synthetic chemistry now enable the de novo preparation of diverse chlorin-containing molecular architectures. Five distinct molecular designs have been explored here, including hydrophobic bioconjugatable (oxo)chlorins; a hydrophilic bioconjugatable chlorin; a trans-ethynyl/iodochlorin building block; a set of chlorins bearing electron-rich (methoxy, dimethylamino, methylthio) groups at the 3-position; and a set of ten 3,13-disubstituted chlorins chiefly bearing groups with extended π-moieties. Altogether 23 new chlorins (17 targets, 6 intermediates) have been prepared. The challenge associated with molecular designs that encompass the combination of "hydrophilic, bioconjugatable and wavelength-tunable" chiefly resides in the nature of the hydrophilic unit.
随着氯素合成化学的进步,现在可以从头开始制备各种含氯素的分子结构。本文探讨了五种不同的分子设计,包括疏水性可生物共轭(氧化)氯化物;亲水性可生物共轭氯化物;反式乙炔基/碘氯化物结构单元;一组在 3 位含有富电子(甲氧基、二甲基氨基、甲硫基)基团的氯化物;以及一组主要含有具有扩展 π-分子结构基团的 10 种 3,13-二取代氯化物。共制备出 23 种新的氯素(17 种目标物,6 种中间物)。与兼具 "亲水性、可生物共轭性和波长可调性 "的分子设计相关的挑战主要在于亲水单元的性质。