메뉴 건너뛰기




Volumn 3, Issue 3, 2001, Pages 312-318

An alkylsilyl-tethered, high-capacity solid support amenable to diversity-oriented synthesis for one-bead, one-stock solution chemical genetics

Author keywords

[No Author keywords available]

Indexed keywords

ALKYNE; BROMINE; MICROSPHERE; PLANT RESIN; POLYSTYRENE DERIVATIVE; SILANE DERIVATIVE;

EID: 0035351150     PISSN: 15204766     EISSN: None     Source Type: Journal    
DOI: 10.1021/cc000107i     Document Type: Article
Times cited : (102)

References (61)
  • 3
    • 0042327457 scopus 로고    scopus 로고
    • (c) http://iccb.med.harvard.edu.
  • 4
    • 0041826488 scopus 로고    scopus 로고
    • (d) http://www-schreiber.chem-.harvard.edu.
  • 8
  • 11
    • 0027362628 scopus 로고
    • Modifications of this technique will be disclosed soon
    • Currently we use a modification of the binary encoding method first described by Still to elucidate the chemical history of each synthesis bead. Ohlmeyer, M. H.; Swanson, R. N.; Dillard, L. W.; Reader, J. C.; Asouline, G.; Kobayashi, R.; Still, W. C. Proc. Natl. Acad. Sci. 1993, 90, 10922-10926. Modifications of this technique will be disclosed soon.
    • (1993) Proc. Natl. Acad. Sci. , vol.90 , pp. 10922-10926
    • Ohlmeyer, M.H.1    Swanson, R.N.2    Dillard, L.W.3    Reader, J.C.4    Asouline, G.5    Kobayashi, R.6    Still, W.C.7
  • 12
    • 0041826487 scopus 로고    scopus 로고
    • note
    • The 50 nmol of small molecule will give rise to a 5 mM stock solution in 10 μL of DMSO. Our current infrastructure readily supports the automated handling of these volumes of reagents and solvents for library arraying requirements and biological assays.
  • 13
    • 0041826483 scopus 로고    scopus 로고
    • note
    • By use of robotic pin-transfer methods, our largest pin-transfer array consumes approximately 100 nL of stock DMSO solution upon each use. For the process of compound printing (see ref 5), approximately 1 nL of stock solution is removed from each well in a typical source plate.
  • 14
    • 0042828560 scopus 로고    scopus 로고
    • note
    • This amount of material also allows for the use of traditional methods of analysis (MAS NMR, HPLC, LC-MS, etc.) to assist in determining the identity of each small molecule in the event that the binary encoding/decoding protocol fails. See ref 6.
  • 15
    • 0034696103 scopus 로고    scopus 로고
    • RAPP Polymere GmbH offers large (500-560 μm) aminomethyl functionalized at the 80-110 nmol/bead level; however, this resin would require "grafting" the appropriate linker for use in library synthesis (see footnote 14)
    • For an example of a high-capacity bead using heteroatom-grafted dendrimers, see the following. Fromont, C.; Bradley, M. J. Chem. Soc., Chem. Commun. 2000, 283-284. RAPP Polymere GmbH offers large (500-560 μm) aminomethyl functionalized at the 80-110 nmol/bead level; however, this resin would require "grafting" the appropriate linker for use in library synthesis (see footnote 14).
    • (2000) J. Chem. Soc., Chem. Commun. , pp. 283-284
    • Fromont, C.1    Bradley, M.2
  • 19
    • 0042828559 scopus 로고    scopus 로고
    • See ref 18d
    • (b) See ref 18d.
  • 20
    • 0029841253 scopus 로고    scopus 로고
    • For a review of the relative stabilities and cleavage conditions of silyl ethers, see the following. Nelson, T. D.; Crouch, R. D. Synthesis 1996, 1031-1069.
    • (1996) Synthesis , pp. 1031-1069
    • Nelson, T.D.1    Crouch, R.D.2
  • 21
    • 0033683359 scopus 로고    scopus 로고
    • We felt it was important to exclude heteroatoms from the tether (graft unit) to remove the possibility of unexpected reactivity/interference that could erode confidence in each split-pool synthetic step. For a recent review of linker chemistry, see the following. Guillier, F.; Orain, D.; Bradley, M. Chem. Rev. 2000, 100, 2091-2157. James, I. W. Tetrahedron 1999, 55, 4855-4946.
    • (2000) Chem. Rev. , vol.100 , pp. 2091-2157
    • Guillier, F.1    Orain, D.2    Bradley, M.3
  • 22
    • 0033574590 scopus 로고    scopus 로고
    • We felt it was important to exclude heteroatoms from the tether (graft unit) to remove the possibility of unexpected reactivity/interference that could erode confidence in each split-pool synthetic step. For a recent review of linker chemistry, see the following. Guillier, F.; Orain, D.; Bradley, M. Chem. Rev. 2000, 100, 2091-2157. James, I. W. Tetrahedron 1999, 55, 4855-4946.
    • (1999) Tetrahedron , vol.55 , pp. 4855-4946
    • James, I.W.1
  • 24
    • 0000614334 scopus 로고
    • Trost, B. M., Fleming, I., Eds.; Pergammon: Oxford
    • Kunz, H.; Waldman, H. Comprehensive Organic Synthesis; Trost, B. M., Fleming, I., Eds.; Pergammon: Oxford, 1991; Vol. 6, p 631.
    • (1991) Comprehensive Organic Synthesis , vol.6 , pp. 631
    • Kunz, H.1    Waldman, H.2
  • 25
    • 0041325963 scopus 로고    scopus 로고
    • note
    • This product is available from RAPP Polymere GmbH. Unfunctionalized 1-2% DVB cross-linked polystyrene 500-560 μm beads number 11 500 beads per gram; unfunctionalized 400-450 μm beads number 23 000 beads per gram.
  • 32
    • 0042828558 scopus 로고    scopus 로고
    • U.S. Patent 5 773 512, 1998
    • (g) Chenera, B. U.S. Patent 5 773 512, 1998.
    • Chenera, B.1
  • 35
    • 0042327456 scopus 로고    scopus 로고
    • note
    • Bromine and silicon loading levels were determined by elemental analysis of the resin beads. All analyses were performed by Robertson Microlit Labs, Madison, NJ 07940.
  • 36
    • 0041325962 scopus 로고    scopus 로고
    • note
    • Good mechanical stability of the large polystyrene beads is critical. During the course of a library synthesis, the repeated handling, chemical reactions, swelling/solvation, and drying steps associated with multiple synthetic transformations tend to degrade the overall physical integrity of the resin.
  • 37
    • 0041325959 scopus 로고    scopus 로고
    • note
    • This information comes from visual inspection of the resin using bright-field microscopy.
  • 38
    • 0041325961 scopus 로고    scopus 로고
    • note
    • Polymer Laboratories, Inc., Amherst, MA 01002, has provided these products.
  • 39
    • 0042828555 scopus 로고    scopus 로고
    • note
    • The calculated per bead loading of the 1.0 mequiv of Br per gram (10 240 beads per gram) and 2.0 mequiv of Br per gram (9400 beads per gram) of 500-600 μm PS beads are 98 and 212 nmol, respectively.
  • 40
    • 0041826484 scopus 로고    scopus 로고
    • note
    • This sequence of reactions has been successfully done on a 300 g scale.
  • 43
    • 0007404508 scopus 로고    scopus 로고
    • For previous examples of solid-phase Suzuki coupling procedures, see the following. (a) Larhed, M.; Lindeberg, G.; Hallberg A. Tetrahedron Lett. 1996, 37, 8219-8222.
    • (1996) Tetrahedron Lett. , vol.37 , pp. 8219-8222
    • Larhed, M.1    Lindeberg, G.2    Hallberg, A.3
  • 46
    • 0041826485 scopus 로고    scopus 로고
    • note
    • Time course and catalyst loading levels were examined; data are not shown.
  • 47
    • 0041325960 scopus 로고    scopus 로고
    • note
    • This chemistry has been performed on > 100 g of resin in a single experiment.
  • 49
    • 0042828557 scopus 로고    scopus 로고
    • note
    • 2 solution of dry HCl.
  • 52
    • 0041325958 scopus 로고    scopus 로고
    • note
    • Typically the substrate alcohol is dissolved in benzene and trace water is removed azeotropically using a rotary evaporator. Methylene chloride can also be used for dissolution of the substrate when solubility in benzene is problematic.
  • 53
    • 0041826482 scopus 로고    scopus 로고
    • note
    • The volume of a solvent used in each washing step is approximately 10 mL/g of resin.
  • 54
    • 0041325957 scopus 로고    scopus 로고
    • note
    • This reagent is approximately a 7:3 mixture of HF and pyridine. This reagent can be further buffered with additional pyridine in the cleavage cocktail.
  • 57
    • 0034624574 scopus 로고    scopus 로고
    • For examples of specific chemistries performed on this bead/ linker combination, see the following. (a) Lee, D.; Sello, J.; Schreiber, S. L. Org. Lett. 2000, 2, 709-712.
    • (2000) Org. Lett. , vol.2 , pp. 709-712
    • Lee, D.1    Sello, J.2    Schreiber, S.L.3
  • 61
    • 0000012760 scopus 로고    scopus 로고
    • For line widths, tether length, etc. effects on NMR spectra, see the following. Keifer, P. A. J. Org. Chem. 1996, 61, 1558-1559.
    • (1996) J. Org. Chem. , vol.61 , pp. 1558-1559
    • Keifer, P.A.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.