The synthesis of the title compound (1) was accomplished by the conversion of 2,4-dimethoxybenzylamine (2) into an isothiocyanate (3) using thiocarbonyl diimidazole. Treatment of 3 with hydroxylamine and removal of the DMB group with trifluoroacetic acid gave 1. N-Hydroxythiourea (1) showed no activity in the L1210 mouse tumor.
[EN] N3-SUBSTITUTED IMINOPYRIMIDINONES AS RENIN INHIBITORS, COMPOSITIONS, AND THEIR USE<br/>[FR] IMINOPYRIMIDINONES SUBSTITUÉES EN N3 EN TANT QU'INHIBITEURS DE LA RÉNINE, COMPOSITIONS ET LEUR UTILISATION
申请人:MERCK SHARP & DOHME
公开号:WO2013142396A1
公开(公告)日:2013-09-26
In its many embodiments, the present invention provides provides certain N3-substituted iminopyrimidinones of Formula (I): and tautomers and stereoisomers thereof, and pharmaceutically acceptable salts of said compounds, said tautomeros and said stereoisomers, wherein each of the variables shown in the formula are as defined herein. The novel compounds of the invention are useful as renin inhibitors and/or for the treatment and prevention of various pathologies related thereto, including cardiovascular events, hypertension, and renal insufficiency. Pharmaceutical compositions comprising one or more such compounds (alone and in combination with one or more other active agents), and methods for their preparation and use, are also disclosed.
Solid-Phase Parallel Synthesis of N-Substituted-2-aminothiazolo[4,5-<i>b</i>]pyrazine Derivatives via Tandem Reaction of Isothiocyanate Terminated Resin with <i>o</i>-Bromo-2-Aminopyrazines
作者:Aizhan Abdildinova、Seung-Ju Yang、Young-Dae Gong
DOI:10.1021/acscombsci.6b00127
日期:2016.12.12
A novel solid-phase synthesis methodology of N-substituted-2-aminothiazolo[4,5-b]pyrazine derivatives was developed. The key step in this synthesis strategy is the tandem reaction of isothiocyanate terminated resin 2 with o-bromo-2-aminopyrazine, affording cyclized 2-aminothiazolo[4,5-b]pyrazine resin 4. To increase the diversity of our library, Suzuki coupling reaction was performed at the position
开发了一种新型的N-取代-2-氨基噻唑并[4,5- b ]吡嗪衍生物的固相合成方法。该合成策略的关键步骤是异硫氰酸酯封端的树脂2与邻溴2-氨基吡嗪的串联反应,从而得到环化的2-氨基噻唑并[4,5- b ]吡嗪树脂4。为了增加我们文库的多样性,在位置C6进行了铃木偶联反应。2-氨基噻唑并[4,5- b ]吡嗪核心骨架进一步被各种亲电试剂(例如卤代烷,酰氯和磺酰氯)官能化,并在TFA中用TFA从树脂上裂解,生成N-烷基-,N-酰基-和N-磺酰基-2-氨基噻唑并[4,5- b ]吡嗪衍生物。评价了合成化合物的理化性质和极性表面积。
Microwave Assisted Synthesis of 1,3,4-Oxadiazole/Thiohydantoin Hybrid Derivatives via Dehydrative Cycliztion of Semicarbazide
作者:Seung-Ju Yang、Jae-Min Lee、Gee-Hyung Lee、NaYeon Kim、Yong-Sang Kim、Young-Dae Gong
DOI:10.5012/bkcs.2014.35.12.3609
日期:2014.12.20
eduReceived July 29, 2014, Accepted September 16, 2014A series of compounds containing both 1,3,4-oxadiazole and thiohydantoin were synthesized as a promisingscaffold for application in medicinal chemistry. The key step of the synthesis is a microwave-assistedcyclization of semicarbazides possessing a thiohydantoin moiety at one of the acyl termini using POCl
Construction of Druglike 2-Amido Benzo[<i>d</i>]imidazole Analogues via Desulfurative Cyclization of Thiourea Intermediate Resin on Solid-Phase
作者:Hyun-Jeong Ryu、Seung-Ju Yang、Gee-Hyung Lee、Young-Dae Gong
DOI:10.1021/acscombsci.8b00004
日期:2018.5.14
A 2-amido benzo[d]imidazole library has been constructed by solid-phase synthesis. The key step of this solid-phase synthesis involves the preparation of polymer-bound 2-amino benzo[d]imidazole resin through desulfurative cyclization of thiourea resin using 2-chloro-1,3-dimethylimidazolinium chloride and N,N-diisopropylethylamine in dichloromethane (DCM), and the resin is then functionalized by acylation
通过固相合成已经构建了2-氨基苯并[ d ]咪唑文库。该固相合成的关键步骤涉及使用2-氯-1,3-二甲基咪唑啉鎓氯化物和N,N-二异丙基乙胺的二氯甲烷溶液,通过硫脲树脂的脱硫环化反应,制备与聚合物结合的2-氨基苯并[ d ]咪唑树脂。 (DCM),然后通过在2-胺位置上进行酰化将树脂官能化,得到2-酰胺基苯并[ d ]咪唑树脂。在具有p -I或m -NO 2的2-酰胺基苯并[ d ]咪唑树脂的情况下,通过Suzuki / Sonogashira-偶联将树脂进一步官能化(p -I)还原为伯胺(m -NO 2),然后进行酰化。最后,通过用三氟乙酸和DCM的混合物处理,将官能化的2-酰胺基-苯并[ d ]咪唑树脂从聚合物载体上裂解下来。结果,我们以高收率和良好的纯度获得了2-酰胺基苯并[ d ]咪唑类似物。
Synthesis of N-Substituted-2-Aminothiazolo[4,5-b]pyrazines by Tandem Reaction of o-Aminohalopyrazines with Isothiocyanates
作者:Se Hun Kwak、Gee-Hyung Lee、Young-Dae Gong
DOI:10.5012/bkcs.2012.33.12.4271
日期:2012.12.20
with a stronger base such as NaOH, KOH and LiOH,afforded 2a in moderate yield, except with LiOH (Table 1,entries 3-5). The addition of CuI was deteriorative (Table 1,entry 6). Different solvents were screened in order to increasethe yield (Table 1, entries 7-10). The best result was obtainedwhen DMSO was used as a solvent (Table 1, entry 10). Thereaction time was reduced by using more base equivalentwith