365541-74-8Relevant articles and documents
6-(AMINOALKYL)INDAZOLES
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, (2010/11/28)
6-(Aminoalkyl) indazoles of formula (I) and the salts thereof have renin-inhibiting properties and can be used as antihypertensive, and renal, cardiac and vascular protecting medicinally active ingredients.
Practical synthesis of an orally active renin inhibitor aliskiren
Dong, Hua,Zhang, Zhi-Liu,Huang, Jia-Hui,Ma, Rujian,Chen, Shu-Hui,Li, Ge
, p. 6337 - 6340 (2007/10/03)
A convergent synthesis of aliskiren was accomplished via the use of Segment AB as the key intermediate, which was prepared via the coupling of the Grignard reagent derived from Segment B with Segment A, followed by subsequent oxidative lactonization.
Asymmetric total synthesis of ent-(-)-roseophilin: Assignment of absolute configuration
Boger,Hong
, p. 8515 - 8519 (2007/10/03)
An asymmetric total synthesis of ent-(-)-roseophilin (1), the unnatural enantiomer of a novel naturally occurring antitumor antibiotic, is described. The approach enlists a room temperature heterocyclic azadiene inverse electron demand Diels-Alder reaction of dimethyl 1,2,4,5-tetrazine-3,6-dicarboxylate (7) with the optically active enol ether 6 bearing the C23 chiral center followed by a reductive ring contraction reaction for formation of an appropriately functionalized pyrrole ring in a key 1,2,4,5-tetrazine → 1,2-diazine → pyrrole reaction sequence. A Grubbs' ring closing metathesis reaction was utilized to close the unusual 13-membered macrocycle prior to a subsequent 5-exo-trig acyl radical-alkene cyclization that was used to introduce the fused cyclopentanone and complete the preparation of the tricylic ansa-bridged azafulvene core 32. Condensation of 32 with 33 under the modified conditions of Tius and Harrington followed by final deprotection provided (22S,23S)-1. Comparison of synthetic (22S,23S)-1 ([α]25D, CD) with natural 1 established that they were enantiomers and enabled the assignment of the absolute stereochemistry of the natural product as 22R,23R. Surprisingly, ent-(-)-1 was found to be 2-10-fold more potent than natural (+)-1 in cytotoxic assays, providing ah unusually rewarding culmination to synthetic efforts that provided the unnatural enantiomer.