Peptides and Peptidomimetics: New Synthetic Solutions - C&EN

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lyCTmnwiïïïiJCTmnTïïenffs nwitfïïi rmrr*,^ι 0

X-AAr YJ--

+ H2N—

ι ik 0

φ

*-

•AA'n—COG

Wk

X-AAr-

NH N H

^ ^ -AAV-COOR

1

X-CBZ BOC FMOC

H Alky! Amide

PeptiCLEC

PeptiCLEC-BL

TR

= Alkyl » Gly, Val. Leu

» Gly. Ala, Leu

• G l y , Val, Leu, He, Ala

• Phe. Tyr

• Phe. Tyr

• Phe, Tyr, Trp

» Arg, Lys. Met, Thr

• Pro

> Unnatural Amino Acids

• Glu, Asp. Met, Asn,

^ ^

• Glu, Asp. Met » Unnatural Amino Acids

• Val. Ala. Leu

^ff

• Phe • Unnatural Amino Acids

Arg. Lys • Unnatural Amino Acids

Here are a few examples

PeptiCLEC-TR Catalyzed Peptide Couplings

PeptiCLEC-BL Catalyzed Peptide Couplings 1. Oligopeptides

1. Oligopeptides N-Cbz-Val-PheOMe + AlaNH 2 N-Cbz-Pro-Leu-GlyOEt

PeptCLEC BL

: .

+ Phe-LeuNH 2

N-Cbz-Val-Phe-AlaNH 2

Pep,lCLECB

L

Phe-AA 2 ...AA 29 -AlaOH

N-Cbz-Pro-Leu-Gly-Phe-LeuNH 2

N-Cbz-ProOH

2. Unnatural Peptides r

^ \

r

^ W

^ \ ^

/

\ z C 0

2

M e

Phe-AA 2 ...AA 29 -Ala-PheNH 2

+ Phel\IH2

(Insulin Β chain) + Leu-GlyOEt

Pep,lCLtCTR

.

N-Cbz-Pro-Leu-GlyOEt

PepuCLEC-BL^

LeuNH 2

NHBoc

.

..

:

C0NH2

C0NH

, C02Me

ι

NHBoc

NHBoc 3. Stereospecific Synthesis of Peptidomimetics

N-Boc-Trp-Met-AspOH l\l-Boc-Ser-Lys-AlaOH N-Cbz-PheOH

ο

+ Vall\IH2 + PheNH 2

Pep CLECTR

"

~ N-Boc-Trp-Met-Asp-Val NH 2

Pep CLFCTR

"

_ N-Boc-Ser-Lys-Ala-PheNH 2

+ H-Phe-Ala-Ala-AlaOMe N-Cbz-Phe-Phe-Ala-Ala-AlaOMe

N-Cbz-Phe-CNH* N-Cbz-PheOBzl

N-Cbz-Pro-Gly-Gly-Pro-AlaOH + H-Leu-Leu-LeuNH 2

PeptiCLEC-TR

N-Cbz-Pro-Gly-Gly-Pro-Ala-Leu-Leu-Leu(\IH 2 2. Unprotected Peptides peDt,cLEc-3i_

N-Cbz-Val-PheOMe

Ο Ν"Cbz-Val-Phe- CNH.

4. Glycopeptides HOH2C N-Cbz-PheOBzl

+

H

fj0

°.

O-n-Oct

PepfCLFc-Bi,

H

+ (p-F)PheNH 2

H-Phe-Met-ArgOH

+ PheNH 2

H O ^ 1 ^ ° ,0-n-Oct

"

WLEC-TR

N-Boc-Ser-Glu-AlaOH

-

H-Trp-Met-Asp-(p-F)PheNH 2

_ H-Phe-Met-Arg-PheNH 2

+ (p-F)PheNH 2 N-Boc-Ser-Glu-Ala-(p-F)PheNH 2

OH N-Cbz-Phe(o-CI)OH

PeptiCLEC Family Products Have Unique Advantages: • Catalytic productivity: -Without recycling, produces 100 kg-5 tons/ kg catalyst -With recycling, productivity can increase 10-20 fold • Racemization-free coupling » Side chain protection usually not required ( > Simultaneous coupling and resolution

NEWFROMALTUS: PeptiKitfor Peptide Synthesis

PeptlCLEC TR

3. Unnatural Peptides

N-Cbz-Phe-OH2C

OH

H-Trp-Met-AspOH

+ PheOMe

Pep CLECTR

"

.

N-Cbz-Phe(o-CI)-PheOMe

These are just a few of the growing family of CLEG products developed and commercialized by Altus Biologies. CLEC products are pure, insoluble crystalline catalysts that conduct clean chemistry, and can be used and recycled in most reaction environments. We invite you to investigate the advantages CLEC products bring to your process by talking with an Altus applications specialist, or browsing through our web page.

A

Altus Biologies Inc. mm

40 Allston Street

t t U S

Cambridge, MA 02139-4211 USA USA Tel: 617-499-0500

Fax: 617-499-2480

Toll Free: 1-888-ALT-CLEC (258-2532) Europe Tel: +43 7673 6893 0 Internet: [email protected]

Fax: +43 7673 6893 12

Website: http://www.altus.com

PeptiCLEC and PeptiKit are trademarks of Altus Biologies Inc. © 1997 Altus Biologies Inc.. a subsidiary of Vertex Pharmaceuticals Incorporated. CIRCLE 4 ON READER SERVICE CARD