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159708-89-1

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159708-89-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 159708-89-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,7,0 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 159708-89:
(8*1)+(7*5)+(6*9)+(5*7)+(4*0)+(3*8)+(2*8)+(1*9)=181
181 % 10 = 1
So 159708-89-1 is a valid CAS Registry Number.

159708-89-1Relevant articles and documents

DUAL-ACTING ANTIHYPERTENSIVE AGENTS

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Page/Page column 39, (2010/02/17)

In one aspect, the invention relates to compounds having the formula: wherein: Ar, r, Z, X, R3, and R5-7 are as defined in the specification, or a pharmaceutically acceptable salt thereof. These compounds have AT1 receptor antagonist activity and neprilysin inhibition activity. In another aspect, the invention relates to pharmaceutical compositions comprising such compounds; methods of using such compounds; and process and intermediates for preparing such compounds.

A New Regioselective Synthesis of 1,2,5-Trisubstituted 1H-Imidazoles and Its Application to the Development of Eprosartan

Shilcrat, Susan C.,Mokhallalati, Mohamed K.,Fortunak, Joseph M. D.,Pridgen, Lendon N.

, p. 8449 - 8454 (2007/10/03)

A new method is presented for the preparation of 1,2-disubstitued-1H-imidazole-5-carboxaldehydes by the reaction of N-monosubstituted amidines with 2-halo-3-alkoxy-2-propenals. The reaction is highly regioselective with ratios of 1,2,5:1,2,4-imidazolecarboxaldehydes ranging from 85:15 to 100: 0. This methodology could be extended with similar results to the synthesis of imidazole-5-nitriles by the reaction of 2-bromo-3-methoxy-2-propenenitrile with N-monosubstituted amidines.

Potent Nonpeptide Angiotensin II Receptor Antagonists. 2. (1-Carboxybenzyl)imidazole-5-acrylic Acids

Keenan, Richard M.,Weinstock, Joseph,Finkelstein, Joseph A.,Franz, Robert G.,Gaitanopoulos, Dimitri E.,et al.

, p. 1880 - 1892 (2007/10/02)

The further evolution of the imidazole-5-acrylic acid series of nonpeptide angiotensin II receptor antagonists is detailed (for Part 1, see: J.Med.Chem. 1992, 35, 3858).Modifications of the N-benzyl ring substitution were undertaken in an effort to mimic the Tyr4 residue of angiotensin II.Introduction of a p-carboxylic acid on the N-benzyl ring resulted in the discovery of compounds with nanomolar affinity for the receptor and good oral activity.SAR studies of these potent antagonists revealed that the thienyl ring, the (E)-acrylic acid, and the imidazole ring in addition to the two acid groups were important for high potency.Also, overlay comparisons of the parent diacid with both angiotensin II and a representative biphenylyltetrazole nonpeptide angiotensin II receptor antagonist are presented.The parent diacid analog, SKF 108566 or (E)-3--2-propenoic acid, is currently in clinical development for the treatment of hypertension.

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