The present invention provides a compound of formula I
The compounds of formula I demonstrate properties as Smurf-1 inhibitors and are thus useful in the treatment of a range of disorders, particularly pulmonary arterial hypertension.
Cycloheptynes and cyclooctynes have been efficiently generated via a sulfoxide–magnesium exchange reaction of readily synthesized 2-sulfinylcycloalkenyl triflates.
环庚烯和环庚炔已通过易于合成的2-磺酰基环烯基三氟甲磺酸酯的亚砜-镁交换反应高效生成。
6,7‐Benzotropolone Syntheses Based on Ring‐Closing Metatheses and Four‐Electron Oxidations
作者:Michael Kreibich、Manuel Gemander、David Peter、Dharmendra B. Yadav、Charles B. de Koning、Manuel A. Fernandes、Ivan R. Green、Willem A. L. van Otterlo、Reinhard Brückner
DOI:10.1002/ejoc.202000256
日期:2020.5.22
Homoallyl ortho‐vinylaryl ketones were prepared through several different routes. In the presence of 1–2 mol‐% Grubbs‐II catalyst, these substrates cyclized to give 6,7‐dihydrobenzocyclohepten‐5‐ones. The enolates derived therefrom by treatment with NaHMDS in THF were oxidized by a stream of molecular oxygen at 0 °C. This furnished 6‐hydroxybenzocyclohepten‐5‐ones (“6,7‐benzotropolones”).
Novel 7-amino-benzocycloheptenes of the formula ##STR1## wherein X is selected from the group consisting of hydrogen, chlorine, bromine and iodine in the 2- or 4-position when a halogen, Y and Z are hydrogen or together form a double bond, R is selected from the group consisting of hydrogen, alkyl of 1 to 5 carbon atoms and phenyl optionally substituted with fluorine, chlorine, methyl or methoxy, R.sub.1 is selected from the group consisting of hydrogen, alkyl of 1 to 5 carbon atoms and alkenyl of 2 to 5 carbon atoms and R.sub.2 is selected from the group consisting of alkyl of 1 to 5 carbon atoms and alkenyl of 2 to 5 carbon atoms and R.sub.1 and R.sub.2 taken together with the nitrogen atom to which they are attached form a saturated heterocycle of 4 to 6 carbon atoms and optionally containing another hetero-atom and optionally substituted with an alkyl of 1 to 5 carbon atoms and their non-toxic, pharmaceutically acceptable acid addition salts having antidepressive activity and their preparation and novel intermediates.
A Rhodium-Catalyzed C−H Activation/Cycloisomerization Tandem
作者:Christophe Aïssa、Alois Fürstner
DOI:10.1021/ja0746316
日期:2007.12.1
A reaction cascade comprising a rhodium-catalyzed C-H activation, a subsequent hydrometalation of an alkylidene cyclopropane in vicinity, regioselective C-C bond activation of the flanking cyclopropane ring, followed by reductive elimination of the resulting metallacycle, opens a new entry into functionalized cycloheptene derivatives. This crossover of C-H activation and higher order cycloaddition
反应级联反应包括铑催化的 CH 活化,随后附近亚烷基环丙烷的加氢金属化,侧翼环丙烷环的区域选择性 CC 键活化,然后还原消除所得金属环,打开了功能化环庚烯衍生物的新入口。CH 活化和更高级环加成的这种交叉已经以两种不同的形式进行,要么使用带有侧乙烯基吡啶部分的亚烷基环丙烷,要么使用悬垂的醛基作为触发器。该反应耐受各种官能团,使反应位点的手性中心 α 不受影响,并以优异的立体选择性进行。标记实验支持所提出的解释观察到的净环异构化过程的机制。