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277752-64-4

Nb-benzylalstonerine is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

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  • 277752-64-4 Structure

  • Basic information

    1. Product Name: Nb-benzylalstonerine
    2. Synonyms: Nb-benzylalstonerine
    3. CAS NO:277752-64-4
    4. Molecular Formula:
    5. Molecular Weight: 412.532
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 277752-64-4.mol

  • Chemical Properties

    1. Melting Point: N/A
    2. Boiling Point: N/A
    3. Flash Point: N/A
    4. Appearance: N/A
    5. Density: N/A
    6. Refractive Index: N/A
    7. Storage Temp.: N/A
    8. Solubility: N/A
    9. CAS DataBase Reference: Nb-benzylalstonerine(CAS DataBase Reference)
    10. NIST Chemistry Reference: Nb-benzylalstonerine(277752-64-4)
    11. EPA Substance Registry System: Nb-benzylalstonerine(277752-64-4)

  • Safety Data

    1. Hazard Codes: N/A
    2. Statements: N/A
    3. Safety Statements: N/A
    4. WGK Germany:
    5. RTECS:
    6. HazardClass: N/A
    7. PackingGroup: N/A
    8. Hazardous Substances Data: 277752-64-4(Hazardous Substances Data)

277752-64-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 277752-64-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,7,7,7,5 and 2 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 277752-64:
(8*2)+(7*7)+(6*7)+(5*7)+(4*5)+(3*2)+(2*6)+(1*4)=184
184 % 10 = 4
So 277752-64-4 is a valid CAS Registry Number.

277752-64-4Downstream Products

277752-64-4Relevant articles and documents

Enantiospecific Total Synthesis of the Sarpagine Related Indole Alkaloids Talpinine and Talcarpine as Well as the Improved Total Synthesis of Alstonerine and Anhydromacrosalhine-methine via the Asymmetric Pictet-Spengler Reaction

Yu, Peng,Wang, Tao,Li, Jin,Cook, James M.

, p. 3173 - 3191 (2007/10/03)

The enantiospecific total synthesis of talpinine 1 and talcarpine 2 has been accomplished from D-(+)-tryptophan in 13 steps (11 reaction vessels) in 10% and 9.5% overall yields, respectively. Moreover, this synthetic approach has been employed for the improved synthesis of alstonerine 3 and anhydromacrosalhine-methine 4 in 12% and 14% overall yield, respectively. A convenient synthetic route for the enantiospecific, stereospecific preparation of the key intermediate (-)-Na-H, Nb-benzyl tetracyclic ketone 15a via the asymmetric Pictet-Spengler reaction on a multihundredgram scale has been developed. A diastereocontrolled (>30:1) anionic oxy-Cope rearrangement and the intramolecular rearrangement to form ring-E and an Nb-benzyl/Nb-methyl transfer reaction also served as key steps. This general approach can now be utilized for the synthesis of macroline/ sarpagine related indole alkaloids and their antipodes for biological screening.

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