Nucleophilic Substitutions of Alcohols in High Levels of Catalytic Efficiency
作者:Tanja Stach、Julia Dräger、Peter H. Huy
DOI:10.1021/acs.orglett.8b01023
日期:2018.5.18
A practical method for the nucleophilicsubstitution (SN) of alcohols furnishing alkyl chlorides, bromides, and iodides under stereochemical inversion in high catalytic efficacy is introduced. The fusion of diethylcyclopropenone as a simple Lewis base organocatalyst and benzoyl chloride as a reagent allows notable turnover numbers up to 100. Moreover, the use of plain acetyl chloride as a stoichiometric
Compounds having the structure or their salts: are used to treat or reduce le likelihood of acquiring androgen-dependent diseases, such as prostate cancer, benign prostatic hyperplasia, polycystic ovarian syndrome, acne, hirsutism, seborrhea, androgenic alopecia and male baldness. They can be formulated together with pharmaceutically acceptable diluent or carrier or otherwise made into any pharmaceutical dosage form. Some of these compounds having tissue-specific antiandrogenic activity and tissue-specific androgenic activity can be used to treat or reduce the risk of developing diseases related to loss of androgenic stimulation. Combinations with other active pharmaceutical agents are also disclosed.
Isosteres of ester derived glucose uptake inhibitors
作者:Dennis A. Roberts、Liyi Wang、Weihe Zhang、Yi Liu、Pratik Shriwas、Yanrong Qian、Xiaozhuo Chen、Stephen C. Bergmeier
DOI:10.1016/j.bmcl.2020.127406
日期:2020.9
previously reported on the anticancer activity of an ester derived glucose uptake inhibitor. Due to the hydrolytic instability of the ester linkage we have prepared a series of isosteres of the ester moiety. Of all of the isosteres prepared, the amine linkage showed the most promise. Several additional analogues of the amine-linked compounds were also prepared to improve the overall activity.
[3-prenyl-4-(dihydrocinnamoyloxy)cinnamic acid], a component of propolis, was shown to be both potent (Ki 56 nM) and highly isoform-selective inhibitor of AKR1C3. In this study, a series of derivatives of baccharin were synthesized by replacing the 3-prenyl moiety with aryl and alkyl ether moieties, and their inhibitory activities for the enzyme were evaluated. Among them, two benzyl ether derivatives, 6m and
醛糖酮还原酶超家族的人类成员(AKR1C3)的抑制剂被认为是治疗前列腺癌和乳腺癌的有前途的疗法。Baccharin [3-异戊烯基-4-(二氢肉桂酰氧基)肉桂酸],蜂胶的一种成分,既是有效的(K i 56 nM),又是AKR1C3的高度同工型选择性抑制剂。在这项研究中,通过用芳基和烷基醚部分取代3-异戊烯基部分,合成了一系列的baccharin衍生物,并评估了其对酶的抑制活性。其中,两种苄基醚衍生物6m和6n表现出与baccharin相当的抑制力。AKR1C3中6m的分子对接使得(E)-3- 3-[(3-羟基苄基)氧基] -4-[(3-苯基丙酰基)氧基]苯基}丙烯酸(14),其效能(K i 6.4 nM)和选择性可与baccharin相比提高。此外,14显着降低了AKR1C3的雄激素和具有细胞毒性的4-氧代-2-壬烯醛的细胞代谢,其浓度远低于baccharin。
Helix 12 directed pharmaceutical products
申请人:Labrie Fernand
公开号:US20050250749A1
公开(公告)日:2005-11-10
Compounds having the structure or their salts:
are used to treat or reduce le likelihood of acquiring androgen-dependent diseases, such as prostate cancer, benign prostatic hyperplasia, polycystic ovarian syndrome, acne, hirsutism, seborrhea, androgenic alopecia and male baldness. They can be formulated together with pharmaceutically acceptable diluent or carrier or otherwise made into any pharmaceutical dosage form. Some of these compounds having tissue-specific antiandrogenic activity and tissue-specific androgenic activity can be used to treat or reduce the risk of developing diseases related to loss of androgenic stimulation. Combinations with other active pharmaceutical agents are also disclosed.