Crystal structures of two thiacalix[4]arene derivatives anchoring four thiadiazole groups
نویسندگان
چکیده
منابع مشابه
Crystal structures of two substituted thiazolidine derivatives
In the first of the compounds reported herein, namely 6'-ferrocenyl-6a'-nitro-6',6a',6b',7',9',11a'-hexa-hydro-2H-spiro-[ace-naphthyl-ene-1,11'-chromeno[3',4':3,4]pyrrolo-[1,2-c]thia-zol]-2-one, [Fe(C5H5)(C29H21N2O4S)], (I), the thia-zolidine ring adopts a twist conformation on the methine N-C atoms. In the second compound, viz. 6'-(4-methoxy-phen-yl)-6a'-nitro-6',6a',6b',7',9',11a'-hexa-hydro-...
متن کاملCrystal structures of four chiral imine-substituted thio-phene derivatives.
A series of thio-phenes substituted in positions 2 and 5 by imine groups have been synthesized using a solvent-free approach, and their crystal structures determined. The substituents are chiral groups, and the expected absolute configuration for each mol-ecule was confirmed by refinement of the Flack parameter. The compounds are 2,5-bis-[(S)-(+)-(1,2,3,4-tetra-hydro-naphthalen-1-yl)imino]-thio...
متن کاملThe antileukemic action of two thiadiazole derivatives.
]'he thiadiazole derivatives ~-amino-l,S-4-thiadiazole and 5~-ethylamino-l,gAthiadiazole retarded the growth of leukemia LI~10 and extended the survival time of the mice. The thiadiazoles were approximately as effective as the folie acid antagonist aminopterin but considerably less effective than amethopterin in inereasing the life span of the leukemic mice. The antileukemie action and host tox...
متن کاملWeak interactions in the crystal structures of two indole derivatives
We describe the syntheses and crystal structures of two indole derivatives, namely a second monoclinic polymorph of ethyl 5-chloro-1H-indole-2-carboxyl-ate C11H10ClNO2, (I), and ethyl 5-chloro-3-iodo-1H-indole-2-carboxyl-ate, C11H9ClINO2, (II). In their crystal structures, both compounds form inversion dimers linked by pairs of N-H⋯O hydrogen bonds, which generate R 2 (2)(10) loops. The dimers ...
متن کاملSynthesis, resolution and crystal structures of two enantiomeric rhodamine derivatives
The title mol-ecule, rac-6'-bromo-3'-di-ethyl-amino-3H-spiro-[2-benzo-furan-1,9'-xanthen]-3-one, C24H20BrNO3, was synthesized and the two enanti-omers which formed were separated. The structures of all three compounds were determined and compared with those of a variety of related derivatives. A notable feature is the fold of the xanthene portion which ranges from 15.15 (13)° in the racemate to...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Chemical Sciences
سال: 2009
ISSN: 0974-3626,0973-7103
DOI: 10.1007/s12039-009-0118-4