64180-31-0Relevant academic research and scientific papers
Practical and chemoselective reduction of acyl chloride to alcohol by borohydride in aqueous dichloromethane
Rajan, Ramya,Badgujar, Sachin,Kaur, Kamaljit,Malpani, Yashwardhan,Kanjilal, Pranab R.
experimental part, p. 2897 - 2907 (2010/11/18)
A simple methodology for the reduction of acid chlorides to their corresponding alcohols has been developed. Various carboxylic acids were converted to alcohols in excellent yields using NaBH4-K2CO3 in a mixed solvent system of dichloromethane and water (1:1) in the presence of a phase-transfer catalyst at low temperature. The importance of the work is its simplicity, selectivity, excellent yield, and very short reaction time. This new reduction condition has proved to be an excellent chemoselective method for a range of acid chlorides in the presence of various functional groups.
Betulin-derived compounds as inhibitors of alphavirus replication
Pohjala, Leena,Alakurtti, Sami,Ahola, Tero,Yli-Kauhaluoma, Jari,Tammela, Paeivi
supporting information; experimental part, p. 1917 - 1926 (2010/04/29)
This paper describes inhibition of Semliki Forest virus (SFV) replication by synthetic derivatives of naturally occurring triterpenoid betulin (1). Chemical modifications were made to OH groups at C-3 and C-28 and to the C-20-C-29 double bond. A set of heterocyclic betulin derivatives was also assayed. A free or acetylated OH group at C-3 was identified as an important structural contributor for anti-SFV activity, 3,28-di-O-acetylbetulin (4) being the most potent derivative (IC50 value 9.1 μM). Betulinic acid (13), 28-O-tetrahydropyranylbetulin (17), and a triazolidine derivative (41) were also shown to inhibit Sindbis virus, with IC50 values of 0.5, 1.9, and 6.1 μM, respectively. The latter three compounds also had significant synergistic effects against SFV when combined with 3′-amino-3′-deoxyadenosine. In contrast to previous work on other viruses, the antiviral activity of 13 was mapped to take place in virus replication phase. The efficacy was also shown to be independent of external guanosine supplementation.
BETULIN DERIVED COMPOUNDS USEFUL AS ANTIBACTERIAL AGENTS
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Page/Page column 66, (2008/06/13)
The invention relates to compouns derived from betulin, and to the use thereof as antibacterial agents in pharmaceutical and cosmetic applications.
BETULIN DERIVED COMPOUNDS AS ANTI-FEEDANTS FOR PLANT PESTS
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Page/Page column 41, (2008/06/13)
The invention relates to compounds derived from betulin, and to the use thereof in plant pest control, particularly as antifeedants for butterfly larvae, beetles and snails. Further, the invention relates to novel betulin derivatives and methods for the production thereof either directly from betulin, or via intermediates derived therefrom.
Aspects of Tautomerism: Part X - Neighbouring Group Effects on the Structure and Reactivity Patterns of Acid Chlorides
Bhatt, M. Vivekananda,El Ashry, Shaker H.,Somayaji, Vishwanatha
, p. 473 - 486 (2007/10/02)
The influence of neighbouring groups on the structure and reactivity patterns of over one hundred acid chlorides derived from γ- and δ-keto acids, 1,2- and 1,3-dicarboxylic acid half-esters and diacid chlorides have been examined.Contrary to reports in the literature, text books and monographs, evidence has been obtained for the non-existence of tautomerism between the isomeric pairs of either acid chlorides or half-ester acid chlorides.ce.
