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77080-67-2

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77080-67-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77080-67-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,0,8 and 0 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 77080-67:
(7*7)+(6*7)+(5*0)+(4*8)+(3*0)+(2*6)+(1*7)=142
142 % 10 = 2
So 77080-67-2 is a valid CAS Registry Number.

77080-67-2Relevant articles and documents

Synthesis of vinca alkaloids and related compounds. Part 101: A new convergent synthetic pathway to build up the aspidospermane skeleton. Simple synthesis of 3-oxovincadifformine and 3-oxominovincine. Attempts to produce 15β-hydroxyvincadifformine

éles, János,Kalaus, Gy?rgy,Greiner, István,Kajtár-Peredy, Mária,Szabó, Pál,Szabó, Lajos,Szántay, Csaba

, p. 8921 - 8927 (2007/10/03)

A molecule with an indole skeleton, containing a latent acrylic ester function - acting as a diene - was produced from Nb-trityl-2-(hydroxy-methyl)-tryptamine and reacted with esters containing an aldehyde or aldehyde-equivalent structural unit, yielding 3-oxo-16,17-dihydro-Δ20-secodin-17-ol type intermediates from which dehydration, followed by [4+2]cycloaddition, furnished 3-oxovincadifformine and 3-oxominovincine. We also wished to apply the method to produce 15β-hydroxyvincadifformine, however, the appearance of a dimeric product with indole skeleton was observed instead of the expected cycloaddition.

Syntheses of Strychnan- and Aspidospermatan-Type Alkaloids. 9.1 The Enantioselective Generation of Tetracyclic ABCE Intermediates by a Tandem Condensation, [3,3]-Sigmatropic Rearrangement, and Cyclization Sequence

Kuehne, Martin E.,Xu, Feng

, p. 7950 - 7960 (2007/10/03)

Reactions of substituted acroleins with the tryptophan-derived benzyl 2-(benzylamino)-3-[3-[2-[(methoxycarbonyl)methyl]indolyl]]propionate gave tetracyclic hexahydro-1H-pyrrolo[2,3-d] intermediates with stereoselective placement of substituents for cycliz

Studies in biomimetic alkaloid syntheses. 6. Alternative pathways to secodines and their acyclic enamino acrylate analogues. Total syntheses of desethylibophyllidine, D-Norvincadifformine, desethylvincadifformine, 20-methyldesethylvincadifformine, and 3-oxovincadifformine

Kuehne,Matsko,Bohnert,et al.

, p. 2002 - 2009 (2007/10/02)

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