Welcome to LookChem.com Sign In|Join Free

CAS

  • or

1139257-91-2

Post Buying Request

1139257-91-2 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

1139257-91-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1139257-91-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,3,9,2,5 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1139257-91:
(9*1)+(8*1)+(7*3)+(6*9)+(5*2)+(4*5)+(3*7)+(2*9)+(1*1)=162
162 % 10 = 2
So 1139257-91-2 is a valid CAS Registry Number.

1139257-91-2Downstream Products

1139257-91-2Relevant articles and documents

Synthesis of each enantiomer of rocaglamide by means of a palladium(0)-catalyzed nazarov-type cyclization

Zhou, Zhe,Tius, Marcus A.

, p. 6037 - 6040 (2015)

A recently reported Pd0-catalyzed asymmetric Nazarov-type cyclization has been successfully applied in the key step of the first catalytic asymmetric total synthesis of (-)-rocaglamide (natural) and (+)-rocaglamide. The stereochemistry at the C3 position that controls the stereochemistry of all other stereocenters is determined in the cyclization step. This versatile and modular synthesis proceeds from simple reagents.

The Evolution of the Total Synthesis of Rocaglamide

Zhou, Zhe,Dixon, Darryl D.,Jolit, Anais,Tius, Marcus A.

, p. 15929 - 15936 (2016/10/24)

The complex flavagline, (?)-rocaglamide, possesses a synthetically intriguing tricyclic scaffold with five contiguous stereocenters and also exhibits potent anticancer, anti-inflammatory and insecticidal activity. This full account details distinct approaches to (±)- and (?)-rocaglamide utilizing Br?nsted acid catalyzed and asymmetric Pd0-catalyzed Nazarov chemistry developed in our laboratory, respectively. The successful asymmetric synthesis revealed unforeseen mechanistic complexity that required adjusting our strategy to overcome an unanticipated racemization process, an unusual reversible ring-cleavage step and a very facile trialkylsilyl group migration.

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 1139257-91-2