共查询到20条相似文献,搜索用时 15 毫秒
1.
2.
3.
4.
Valentina F. Sedova Viktor P. Krivopalov Oleg P. Shkurko 《Chemistry of Heterocyclic Compounds》2017,53(10):1163-1166
5.
6.
7.
8.
9.
(S)-(+)-4-Amino-4-aryl-5,5,5-trifluoropentan-2-one reacted with aryl isothiocyanates containing electron-withdrawing substituents
to give (S)-(−)-1,4-diaryl-6-methyl-4-trifluoromethyl-3,4-dihydropyrimidine-2(1H)-thiones. 相似文献
10.
11.
12.
13.
A series of novel helicid derivatives containing 3,4-dihydropyrimidin-2(1H)-one and 3,4-dihydropyrimidine2(1H)-thione moiety (3a–3f and 4a–4f) were synthesized starting from helicid. The structure of the new compounds were characterized by 1H NMR, IR and HR-MS spectra. The sedative-hypnotic activities of the target compounds were evaluated using the test of spontaneous
locomotor activity in mice. All of the derivatives produced moderate to high activities; in particular, compound 4a presented the most potent sedative-hypnotic effect in comparison to the other derivatives, and derivatives 3a, 3c, 3d, 3e and 3f also showed potent activities. 相似文献
14.
Tayebeh Davodian Reza Ranjbar-Karimi Hossein Mehrabi 《Chemistry of Heterocyclic Compounds》2017,53(10):1120-1123
15.
The first cyclic unsaturated S-functional derivatives of 4,4-diphenyl-3,4-dihydro-2H-1,4-thiasiline, S-oxide, S,S-dioxide, and S-sulfonimide, were prepared. Oxidation of the hydrolytically less stable 4,4-dimethyl-3,4-dihydro-2H-1,4-thiasiline leads to the corresponding sulfoxide and sulfone along with the ring opening products, siloxanes containing the sulfoxide or sulfonyl group. 相似文献
16.
17.
E. N. Chulakov G. L. Levit A. A. Tumashov N. P. Lugovskaya N. B. Remezovskaya A. Yu. Maksimov V. A. Demakov V. P. Krasnov 《Russian Chemical Bulletin》2015,64(5):1097-1099
New strains of Rhodococcus erythropolis 25 and Microbacterium paraoxydans 20-11c actinobacteria were used to obtain (S)-7,8-difluoro-3,4-dihydro-3-methyl-2H-[1,4]benzoxazine (99.6% ee) by enantioselective microbial hydrolysis of the corresponding racemic N-acetyl derivative. 相似文献
18.
19.