CLVIII.—αβ-Dibenzylaminopropionic acid and 1 : 7-dibenzyltetrahydrouric acid

Bacterial 7-dehydroxylation of cholic acid and allocholic acid.

An obligate anaerobic organism capable of dehydroxylating cholic acid to deoxycholic acid and allocholic acid to allodeoxycholic acid was isolated from feces of the rabbit. It was a member of the bacteroides group (Gram-variable, nonsporulating anaerobes). The growth of the organism was inhibited by neomycin, 10-20 micro g/ml. The existence of this organism affords a satisfactory explanation fo...

Preparation of 7-aminocephalosporanic acid and 6-aminopenicillanic acid.

Photocatalytic Degradation of Anionic Azo Dyes Acid Orange 7 and Acid Red 88 in Aqueous Solutions Using TiO2-containing Hydrogel

      The photocatalytic degradation of two anionic azo dyes Acid Red88 (AR 88) and Acid Orange 7 (AO7) was investigated in aqueous solution using a TiO2-containing hydrogel and UV light. The pH-sensitive hydrogel poly (styrene-alt-maleic anhydride) (PSMA), was synthesized and crosslinked in the presence of melamine and TiO2 nanoparticles which results in entrapment of TiO...

3-(7-Meth­oxy-β-carbolin-1-yl)propionic acid monohydrate

In the title compound, C(15)H(14)N(2)O(3)·H(2)O [systematic name: 3-(7-meth-oxy-9H-pyrido[3,4-b]indol-1-yl)propanoic acid monohydrate], the fused rings make dhedral angles of 0.4 (1), 1.1 (2) and 1.4 (2)°. In the crystal, the water mol-ecule is involved in the formation of three independent hydrogen-bonded chains via O-H⋯O and N-H⋯O hydrogen bonds, while the carb-oxy group forms an inter-molecu...

7-Isopropyl-1,4a-dimethyl-1,2,3,4,4a,5,6,7,8,9,10,10a-dodeca­hydro­phenan­threne-1-carboxylic acid

The title compound, C(20)H(32)O(2), has been isolated from hydrogenated rosin. There are two independent mol-ecules in the asymmetric unit. In each mol-ecule, the cyclo-hexane ring assumes a chair conformation, while the two cyclo-hexene rings adopt half-chair and envelope conformations. Inter-molecular O-H⋯O hydrogen bonding between carboxyl groups links pairs of independent mol-ecules into di...