5‐Triazinanes were used as easily accessible, bench‐stable formaldimine surrogates in the Ugi reaction for rapid assembly of glycinamide derivatives with three elements of diversity, in good to nearly quantitative yields. This protocol was applied for one‐pot two‐step syntheses of lidocaine and severalunsymmetrically substituted diketopiperazines.
Synthesis, structure, and antitumor activity of 2,9-disubstituted perhydro 2,3a,7b,9,10a,14b-hexaazadibenzotetracenes
作者:Elena B. Rakhimova、Victor Yu. Kirsanov、Elena V. Tret'yakova、Leonard M. Khalilov、Askhat G. Ibragimov、Lilya U. Dzhemileva、Vladimir A. D'yakonov、Usein M. Dzhemilev
DOI:10.1039/d0ra03209c
日期:——
Catalytic methods for the synthesis of previously unknown 2,9-disubstituted 3bR*,7aR*,10bR*,14aR*-cis-14c,14d-perhydro-2,3a,7b,9,10a,14b-hexaazadibenzotetracenes with pronounced antitumor activity have been developed.
One-pot catalytic synthesis of 2,7- bis -substituted 4,9(10)-dimethyl-2,3a,5a,7,8a,10a-hexaazaperhydropyrenes
作者:Elena B. Rakhimova、Victor Yu. Kirsanov、Ekaterina S. Meshcheryakova、Leonard M. Khalilov、Boris I. Kutepov、Askhat G. Ibragimov、Usein M. Dzhemilev
DOI:10.1016/j.tet.2017.10.048
日期:2017.12
7-bis-substituted 4,9(10)-dimethyl-2,3a,5a,7,8a,10a-hexaazaperhydropyrenes have been developed. The structure was established on the basis of 1H and 13C NMR spectra, 2D NMR (HSQC, HMBC, COSY, NOESY) techniques, MALDI TOF/TOF spectra, and X-raydiffractiondata. Primary screening of the synthesized hexaazaperhydropyrenes for antimicrobial activity was performed.
已经开发了用于合成2,7-双取代的4,9(10)-二甲基-2,3a,5a,7,8a,10a-六氮杂过氢吡啶的催化方法。该结构是基于1 H和13 C NMR光谱,2D NMR(HSQC,HMBC,COSY,NOESY)技术,MALDI TOF / TOF光谱和X射线衍射数据确定的。初步筛选了合成的六氮杂氢吡啶类化合物的抗菌活性。
Facile Access to 3-Unsubstituted Tetrahydroisoquinolonic Acids via the Castagnoli–Cushman Reaction
tetrahydroisoquinolonic acids (isolated as their respective methyl esters) were accessed for the first time by the uncatalyzed, thermally promoted Castagnoli–Cushman reaction (CCR) of homophthalic anhydride (HPA) and a series of 1,3,5-triazinanes. The moderate yields observed in some cases are most likely associated with a persistentimpurity also formed in these reactions. The new scaffold is expected to
[4+2]‐Cycloaddition of
<i>para</i>
‐Quinone Methides with Hexahydro‐1,3,5‐Triazines: Access to 1,3‐Benzoxazine Derivatives
作者:Xiao Cheng、Shuang‐Jing Zhou、Guo‐Yong Xu、Long Wang、Qing‐Qing Yang、Jun Xuan
DOI:10.1002/adsc.201901169
日期:2020.2.6
exhibits a broad substrate scope and excellent functional group tolerance, and affords a series of biologically important 1,3‐benzoxazine derivatives in good to excellent yields. Moreover, the successful late‐stage functionalization of pharmaceutically relevant compounds further renders the approach valuable.