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190278-37-6

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190278-37-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 190278-37-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,0,2,7 and 8 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 190278-37:
(8*1)+(7*9)+(6*0)+(5*2)+(4*7)+(3*8)+(2*3)+(1*7)=146
146 % 10 = 6
So 190278-37-6 is a valid CAS Registry Number.

190278-37-6Downstream Products

190278-37-6Relevant articles and documents

Visible-Light-Promoted and Yb(OTf)3-Catalyzed Constructions of Coumarin-Pyrrole-(Iso)quinoline-Fused Pentacycles: Synthesis of Lamellarin Core, Lamellarin D Trimethyl Ether, and Lamellarin H

Manjappa, Kiran B.,Syu, Jia-Ru,Yang, Ding-Yah

, p. 332 - 335 (2016)

The efficient construction of a coumarin-pyrrole-isoquinoline-fused pentacycle via the visible-light-promoted cyclization of 4-(isoquinolin-1-ylmethyl)-3-nitrocoumarin or Yb(OTf)3-catalyzed coupling of 4-chloro-3-nitrocoumarin and 1-methylisoqu

Construction of Pentacyclic Lamellarin Skeleton via Grob Reaction: Application to Total Synthesis of Lamellarins H and D

Manjappa, Kiran B.,Lin, Jhih-Min,Yang, Ding-Yah

, p. 7648 - 7656 (2017/07/26)

An efficient construction of phenyl-substituted coumarin-pyrrole-isoquinoline-fused pentacycle via base-promoted Grob-type coupling of 3-nitrocoumarin and papaverine in a sealed tube is reported. This reaction is further applied to the total synthesis of lamellarin H in three linear steps and lamellarin D in eight linear steps with overall yields of 31% and 14%, respectively.

Total syntheses of lamellarin D and H. The first synthesis of lamellarin-class marine alkaloids

Ishibashi, Fumito,Miyazaki, Yuka,Iwao, Masatomo

, p. 5951 - 5962 (2007/10/03)

Total syntheses of marine polyaromatic alkaloids, lamellarin D (1) and H (2), are described. The pentacyclic lamellarin ring system was constructed by N-ylide mediated pyrrole ring formation and subsequent lactonization of 4 obtained by an assembly of known benzylisoquinoline 5, benzoate 6 and ethyl bromoacetate.

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